https://openjdk.java.net/ 
public interface jdk.nashorn.api.tree.ClassDeclarationTree extends jdk.nashorn.api.tree.StatementTree
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: jdk.nashorn.api.tree.ClassDeclarationTree
  super_class: java.lang.Object
{
  public abstract jdk.nashorn.api.tree.IdentifierTree getName();
    descriptor: ()Ljdk/nashorn/api/tree/IdentifierTree;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract jdk.nashorn.api.tree.ExpressionTree getClassHeritage();
    descriptor: ()Ljdk/nashorn/api/tree/ExpressionTree;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract jdk.nashorn.api.tree.PropertyTree getConstructor();
    descriptor: ()Ljdk/nashorn/api/tree/PropertyTree;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract java.util.List<? extends jdk.nashorn.api.tree.PropertyTree> getClassElements();
    descriptor: ()Ljava/util/List;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()Ljava/util/List<+Ljdk/nashorn/api/tree/PropertyTree;>;
}
SourceFile: "ClassDeclarationTree.java"