Copyright (c) 2000, 2019 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2000, 2019 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.compiler;

import org.eclipse.jdt.core.compiler.IProblem;
import org.eclipse.jdt.internal.compiler.ast.*;
import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
import org.eclipse.jdt.internal.compiler.lookup.ClassScope;
import org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope;
import org.eclipse.jdt.internal.compiler.lookup.MethodScope;

A visitor for iterating through the parse tree.
/**
 * A visitor for iterating through the parse tree.
 */
public abstract class ASTVisitor {
	public void acceptProblem(IProblem problem) {
		// do nothing by default
	}
	public void endVisit(
		AllocationExpression allocationExpression,
		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(AND_AND_Expression and_and_Expression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
			AnnotationMethodDeclaration annotationTypeDeclaration,
			ClassScope classScope) {
			// do nothing by default
	}
	public void endVisit(Argument argument, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(Argument argument,ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		ArrayAllocationExpression arrayAllocationExpression,
    		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ArrayInitializer arrayInitializer, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ArrayInitializer arrayInitializer, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(
		ArrayQualifiedTypeReference arrayQualifiedTypeReference,
		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
		ArrayQualifiedTypeReference arrayQualifiedTypeReference,
		ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(ArrayReference arrayReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ArrayTypeReference arrayTypeReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ArrayTypeReference arrayTypeReference, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(AssertStatement assertStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(Assignment assignment, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(BinaryExpression binaryExpression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(Block block, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(BreakStatement breakStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(CaseStatement caseStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(CastExpression castExpression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(CharLiteral charLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ClassLiteralAccess classLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(Clinit clinit, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(
		CompilationUnitDeclaration compilationUnitDeclaration,
		CompilationUnitScope scope) {
		// do nothing by default
	}
	public void endVisit(CompoundAssignment compoundAssignment, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
			ConditionalExpression conditionalExpression,
			BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
		ConstructorDeclaration constructorDeclaration,
		ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(ContinueStatement continueStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(DoStatement doStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(DoubleLiteral doubleLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(EmptyStatement emptyStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(EqualExpression equalExpression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
		ExplicitConstructorCall explicitConstructor,
		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
		ExtendedStringLiteral extendedStringLiteral,
		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(FalseLiteral falseLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(FieldDeclaration fieldDeclaration, MethodScope scope) {
		// do nothing by default
	}
	public void endVisit(FieldReference fieldReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(FieldReference fieldReference, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(FloatLiteral floatLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ForeachStatement forStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ForStatement forStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(IfStatement ifStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ImportReference importRef, CompilationUnitScope scope) {
		// do nothing by default
	}
	public void endVisit(Initializer initializer, MethodScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		InstanceOfExpression instanceOfExpression,
    		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(IntLiteral intLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(Javadoc javadoc, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(Javadoc javadoc, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocAllocationExpression expression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocAllocationExpression expression, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocArgumentExpression expression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocArgumentExpression expression, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocArrayQualifiedTypeReference typeRef, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocArrayQualifiedTypeReference typeRef, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocArraySingleTypeReference typeRef, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocArraySingleTypeReference typeRef, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocFieldReference fieldRef, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocFieldReference fieldRef, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocImplicitTypeReference implicitTypeReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocImplicitTypeReference implicitTypeReference, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocMessageSend messageSend, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocMessageSend messageSend, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocQualifiedTypeReference typeRef, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocQualifiedTypeReference typeRef, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocReturnStatement statement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocReturnStatement statement, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocSingleNameReference argument, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocSingleNameReference argument, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocSingleTypeReference typeRef, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(JavadocSingleTypeReference typeRef, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(LabeledStatement labeledStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(LocalDeclaration localDeclaration, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(LongLiteral longLiteral, BlockScope scope) {
		// do nothing by default
	}
	
Params:
annotation – 
scope – 
Since:
3.1/**
	 * @param annotation
	 * @param scope
	 * @since 3.1
	 */
	public void endVisit(MarkerAnnotation annotation, BlockScope scope) {
		// do nothing by default
	}
	
Params:
annotation – 
scope – /**
	 * @param annotation
	 * @param scope
	 */
	public void endVisit(MarkerAnnotation annotation, ClassScope scope) {
		// do nothing by default
	}
	
Params:
pair – 
scope – /**
	 * @param pair
	 * @param scope
	 */
	public void endVisit(MemberValuePair pair, BlockScope scope) {
		// do nothing by default
	}
	
Params:
pair – 
scope – /**
	 * @param pair
	 * @param scope
	 */
	public void endVisit(MemberValuePair pair, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(MessageSend messageSend, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(MethodDeclaration methodDeclaration, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(StringLiteralConcatenation literal, BlockScope scope) {
		// do nothing by default
	}
	
Params:
annotation – 
scope – 
Since:
3.1/**
	 * @param annotation
	 * @param scope
	 * @since 3.1
	 */
	public void endVisit(NormalAnnotation annotation, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(NormalAnnotation annotation, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(NullLiteral nullLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(OR_OR_Expression or_or_Expression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(ParameterizedSingleTypeReference parameterizedSingleTypeReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ParameterizedSingleTypeReference parameterizedSingleTypeReference, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(PostfixExpression postfixExpression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(PrefixExpression prefixExpression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		QualifiedAllocationExpression qualifiedAllocationExpression,
    		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
		QualifiedNameReference qualifiedNameReference,
		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
			QualifiedNameReference qualifiedNameReference,
			ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		QualifiedSuperReference qualifiedSuperReference,
    		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		QualifiedSuperReference qualifiedSuperReference,
    		ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		QualifiedThisReference qualifiedThisReference,
    		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		QualifiedThisReference qualifiedThisReference,
    		ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		QualifiedTypeReference qualifiedTypeReference,
    		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		QualifiedTypeReference qualifiedTypeReference,
    		ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(ReturnStatement returnStatement, BlockScope scope) {
		// do nothing by default
	}
	
Params:
annotation – 
scope – 
Since:
3.1/**
	 * @param annotation
	 * @param scope
	 * @since 3.1
	 */
	public void endVisit(SingleMemberAnnotation annotation, BlockScope scope) {
		// do nothing by default
	}
	
Params:
annotation – 
scope – /**
	 * @param annotation
	 * @param scope
	 */
	public void endVisit(SingleMemberAnnotation annotation, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		SingleNameReference singleNameReference,
    		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
			SingleNameReference singleNameReference,
			ClassScope scope) {
			// do nothing by default
	}
	public void endVisit(
    		SingleTypeReference singleTypeReference,
    		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
    		SingleTypeReference singleTypeReference,
    		ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(StringLiteral stringLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(SuperReference superReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(SwitchStatement switchStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
		SynchronizedStatement synchronizedStatement,
		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ThisReference thisReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(ThisReference thisReference, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(ThrowStatement throwStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(TrueLiteral trueLiteral, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(TryStatement tryStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
		TypeDeclaration localTypeDeclaration,
		BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
		TypeDeclaration memberTypeDeclaration,
		ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(
		TypeDeclaration typeDeclaration,
		CompilationUnitScope scope) {
		// do nothing by default
	}
	public void endVisit(TypeParameter typeParameter, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(TypeParameter typeParameter, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(UnaryExpression unaryExpression, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
			UnionTypeReference unionTypeReference,
			BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(
			UnionTypeReference unionTypeReference,
			ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(YieldStatement yieldStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(WhileStatement whileStatement, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(Wildcard wildcard, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(Wildcard wildcard, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(LambdaExpression lambdaExpression, BlockScope blockScope) {
		// do nothing by default
	}
	public void endVisit(ReferenceExpression referenceExpression, BlockScope blockScope) {
		// do nothing by default	
	}
	public void endVisit(IntersectionCastTypeReference intersectionCastTypeReference, ClassScope scope) {
		// do nothing by default
	}
	public void endVisit(IntersectionCastTypeReference intersectionCastTypeReference, BlockScope scope) {
		// do nothing by default
	}
	public void endVisit(SwitchExpression switchExpression,	BlockScope scope) {
		// do nothing by default
	}
	public boolean visit(
    		AllocationExpression allocationExpression,
    		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(AND_AND_Expression and_and_Expression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			AnnotationMethodDeclaration annotationTypeDeclaration,
			ClassScope classScope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Argument argument, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Argument argument, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		ArrayAllocationExpression arrayAllocationExpression,
		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ArrayInitializer arrayInitializer, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ArrayInitializer arrayInitializer, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		ArrayQualifiedTypeReference arrayQualifiedTypeReference,
		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		ArrayQualifiedTypeReference arrayQualifiedTypeReference,
		ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ArrayReference arrayReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ArrayTypeReference arrayTypeReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ArrayTypeReference arrayTypeReference, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(AssertStatement assertStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Assignment assignment, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(BinaryExpression binaryExpression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Block block, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(BreakStatement breakStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(CaseStatement caseStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(CastExpression castExpression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(CharLiteral charLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ClassLiteralAccess classLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Clinit clinit, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ModuleDeclaration module, CompilationUnitScope scope) {
		return true;
	}
	public boolean visit(
		CompilationUnitDeclaration compilationUnitDeclaration,
		CompilationUnitScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(CompoundAssignment compoundAssignment, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		ConditionalExpression conditionalExpression,
    		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		ConstructorDeclaration constructorDeclaration,
		ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ContinueStatement continueStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(DoStatement doStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(DoubleLiteral doubleLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(EmptyStatement emptyStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(EqualExpression equalExpression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		ExplicitConstructorCall explicitConstructor,
		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		ExtendedStringLiteral extendedStringLiteral,
		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(FalseLiteral falseLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(FieldDeclaration fieldDeclaration, MethodScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(FieldReference fieldReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(FieldReference fieldReference, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(FloatLiteral floatLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ForeachStatement forStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ForStatement forStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(IfStatement ifStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ImportReference importRef, CompilationUnitScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Initializer initializer, MethodScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		InstanceOfExpression instanceOfExpression,
    		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(IntLiteral intLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Javadoc javadoc, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Javadoc javadoc, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocAllocationExpression expression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocAllocationExpression expression, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocArgumentExpression expression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocArgumentExpression expression, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocArrayQualifiedTypeReference typeRef, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocArrayQualifiedTypeReference typeRef, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocArraySingleTypeReference typeRef, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocArraySingleTypeReference typeRef, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocFieldReference fieldRef, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocFieldReference fieldRef, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocImplicitTypeReference implicitTypeReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocImplicitTypeReference implicitTypeReference, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocMessageSend messageSend, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocMessageSend messageSend, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocQualifiedTypeReference typeRef, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocQualifiedTypeReference typeRef, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocReturnStatement statement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocReturnStatement statement, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocSingleNameReference argument, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocSingleNameReference argument, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocSingleTypeReference typeRef, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(JavadocSingleTypeReference typeRef, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(LabeledStatement labeledStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(LocalDeclaration localDeclaration, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(LongLiteral longLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	
Params:
annotation – 
scope – 
Since:
3.1/**
	 * @param annotation
	 * @param scope
	 * @since 3.1
	 */
	public boolean visit(MarkerAnnotation annotation, BlockScope scope) {
		return true;
	}
	
Params:
annotation – 
scope – /**
	 * @param annotation
	 * @param scope
	 */
	public boolean visit(MarkerAnnotation annotation, ClassScope scope) {
		return true;
	}
	
Params:
pair – 
scope – 
Since:
3.1/**
	 * @param pair
	 * @param scope
	 * @since 3.1
	 */
	public boolean visit(MemberValuePair pair, BlockScope scope) {
		return true;
	}
	
Params:
pair – 
scope – /**
	 * @param pair
	 * @param scope
	 */
	public boolean visit(MemberValuePair pair, ClassScope scope) {
		return true;
	}
	public boolean visit(MessageSend messageSend, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(MethodDeclaration methodDeclaration, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			StringLiteralConcatenation literal,
			BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	
Params:
annotation – 
scope – 
Since:
3.1/**
	 * @param annotation
	 * @param scope
	 * @since 3.1
	 */
	public boolean visit(NormalAnnotation annotation, BlockScope scope) {
		return true;
	}
	
Params:
annotation – 
scope – /**
	 * @param annotation
	 * @param scope
	 */
	public boolean visit(NormalAnnotation annotation, ClassScope scope) {
		return true;
	}
	public boolean visit(NullLiteral nullLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(OR_OR_Expression or_or_Expression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ParameterizedSingleTypeReference parameterizedSingleTypeReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ParameterizedSingleTypeReference parameterizedSingleTypeReference, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(PostfixExpression postfixExpression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(PrefixExpression prefixExpression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		QualifiedAllocationExpression qualifiedAllocationExpression,
    		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			QualifiedNameReference qualifiedNameReference,
			BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			QualifiedNameReference qualifiedNameReference,
			ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		QualifiedSuperReference qualifiedSuperReference,
    		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		QualifiedSuperReference qualifiedSuperReference,
    		ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			QualifiedThisReference qualifiedThisReference,
			BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			QualifiedThisReference qualifiedThisReference,
			ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		QualifiedTypeReference qualifiedTypeReference,
    		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		QualifiedTypeReference qualifiedTypeReference,
    		ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ReturnStatement returnStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	
Params:
annotation – 
scope – 
Since:
3.1/**
	 * @param annotation
	 * @param scope
	 * @since 3.1
	 */
	public boolean visit(SingleMemberAnnotation annotation, BlockScope scope) {
		return true;
	}
	
Params:
annotation – 
scope – /**
	 * @param annotation
	 * @param scope
	 */
	public boolean visit(SingleMemberAnnotation annotation, ClassScope scope) {
		return true;
	}
	public boolean visit(
		SingleNameReference singleNameReference,
		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			SingleNameReference singleNameReference,
			ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		SingleTypeReference singleTypeReference,
    		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
    		SingleTypeReference singleTypeReference,
    		ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(StringLiteral stringLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(SuperReference superReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(SwitchStatement switchStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		SynchronizedStatement synchronizedStatement,
		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ThisReference thisReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ThisReference thisReference, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ThrowStatement throwStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(TrueLiteral trueLiteral, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(TryStatement tryStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		TypeDeclaration localTypeDeclaration,
		BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		TypeDeclaration memberTypeDeclaration,
		ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
		TypeDeclaration typeDeclaration,
		CompilationUnitScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(TypeParameter typeParameter, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(TypeParameter typeParameter, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(UnaryExpression unaryExpression, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			UnionTypeReference unionTypeReference,
			BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(
			UnionTypeReference unionTypeReference,
			ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(YieldStatement yieldStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(WhileStatement whileStatement, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Wildcard wildcard, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(Wildcard wildcard, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(LambdaExpression lambdaExpression, BlockScope blockScope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(ReferenceExpression referenceExpression, BlockScope blockScope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(IntersectionCastTypeReference intersectionCastTypeReference, ClassScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(IntersectionCastTypeReference intersectionCastTypeReference, BlockScope scope) {
		return true; // do nothing by default, keep traversing
	}
	public boolean visit(SwitchExpression switchExpression, BlockScope blockScope) {
		return true; // do nothing by default, keep traversing
	}
}