https://www.graalvm.org/ 
class com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1 implements com.oracle.truffle.api.nodes.NodeVisitor
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1
  super_class: java.lang.Object
{
  private boolean keepVisiting;
    descriptor: Z
    flags: (0x0002) ACC_PRIVATE

  private final java.util.Set val$tags;
    descriptor: Ljava/util/Set;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  private final com.oracle.truffle.api.nodes.NodeVisitor val$visitor;
    descriptor: Lcom/oracle/truffle/api/nodes/NodeVisitor;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(java.util.Set, com.oracle.truffle.api.nodes.NodeVisitor);
    descriptor: (Ljava/util/Set;Lcom/oracle/truffle/api/nodes/NodeVisitor;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1 this
         0: .line 106
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1.val$tags:Ljava/util/Set;
            aload 0 /* this */
            aload 2
            putfield com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1.val$visitor:Lcom/oracle/truffle/api/nodes/NodeVisitor;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 108
            aload 0 /* this */
            iconst_1
            putfield com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1.keepVisiting:Z
         2: .line 106
            return
        end local 0 // com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/truffle/api/instrumentation/DefaultNearestNodeSearch$1;
    MethodParameters:
             Name  Flags
      val$tags     final
      val$visitor  final

  public boolean visit(com.oracle.truffle.api.nodes.Node);
    descriptor: (Lcom/oracle/truffle/api/nodes/Node;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1 this
        start local 1 // com.oracle.truffle.api.nodes.Node childNode
         0: .line 112
            aload 1 /* childNode */
            astore 2 /* ch */
        start local 2 // com.oracle.truffle.api.nodes.Node ch
         1: .line 113
            aload 2 /* ch */
            instanceof com.oracle.truffle.api.instrumentation.InstrumentableNode$WrapperNode
            ifeq 3
         2: .line 114
            aload 2 /* ch */
            checkcast com.oracle.truffle.api.instrumentation.InstrumentableNode$WrapperNode
            invokeinterface com.oracle.truffle.api.instrumentation.InstrumentableNode$WrapperNode.getDelegateNode:()Lcom/oracle/truffle/api/nodes/Node;
            astore 2 /* ch */
         3: .line 116
      StackMap locals: com.oracle.truffle.api.nodes.Node
      StackMap stack:
            aload 2 /* ch */
            instanceof com.oracle.truffle.api.instrumentation.InstrumentableNode
            ifeq 6
            aload 2 /* ch */
            checkcast com.oracle.truffle.api.instrumentation.InstrumentableNode
            invokeinterface com.oracle.truffle.api.instrumentation.InstrumentableNode.isInstrumentable:()Z
            ifeq 6
         4: .line 117
            aload 2 /* ch */
            checkcast com.oracle.truffle.api.instrumentation.InstrumentableNode
            aload 0 /* this */
            getfield com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1.val$tags:Ljava/util/Set;
            invokeinterface com.oracle.truffle.api.instrumentation.InstrumentableNode.materializeInstrumentableNodes:(Ljava/util/Set;)Lcom/oracle/truffle/api/instrumentation/InstrumentableNode;
            checkcast com.oracle.truffle.api.nodes.Node
            astore 2 /* ch */
         5: .line 118
            goto 8
         6: .line 120
      StackMap locals:
      StackMap stack:
            aload 2 /* ch */
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.nodes.NodeUtil.forEachChild:(Lcom/oracle/truffle/api/nodes/Node;Lcom/oracle/truffle/api/nodes/NodeVisitor;)Z
            pop
         7: .line 121
            aload 0 /* this */
            getfield com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1.keepVisiting:Z
            ireturn
         8: .line 123
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1.val$visitor:Lcom/oracle/truffle/api/nodes/NodeVisitor;
            aload 2 /* ch */
            invokeinterface com.oracle.truffle.api.nodes.NodeVisitor.visit:(Lcom/oracle/truffle/api/nodes/Node;)Z
            dup_x1
            putfield com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1.keepVisiting:Z
            ireturn
        end local 2 // com.oracle.truffle.api.nodes.Node ch
        end local 1 // com.oracle.truffle.api.nodes.Node childNode
        end local 0 // com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1 this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    9     0       this  Lcom/oracle/truffle/api/instrumentation/DefaultNearestNodeSearch$1;
            0    9     1  childNode  Lcom/oracle/truffle/api/nodes/Node;
            1    9     2         ch  Lcom/oracle/truffle/api/nodes/Node;
    MethodParameters:
           Name  Flags
      childNode  
}
SourceFile: "DefaultNearestNodeSearch.java"
EnclosingMethod: com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch.forEachInstrumentableChild:(Lcom/oracle/truffle/api/nodes/Node;Lcom/oracle/truffle/api/nodes/NodeVisitor;Ljava/util/Set;)V
NestHost: com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch
InnerClasses:
  com.oracle.truffle.api.instrumentation.DefaultNearestNodeSearch$1
  public abstract WrapperNode = com.oracle.truffle.api.instrumentation.InstrumentableNode$WrapperNode of com.oracle.truffle.api.instrumentation.InstrumentableNode