https://www.graalvm.org/ 
class com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor extends com.oracle.svm.core.genscavenge.PathExhibitor$AbstractVisitor implements com.oracle.svm.core.heap.ObjectReferenceVisitor
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor
  super_class: com.oracle.svm.core.genscavenge.PathExhibitor$AbstractVisitor
{
  private org.graalvm.word.Pointer containerPointer;
    descriptor: Lorg/graalvm/word/Pointer;
    flags: (0x0002) ACC_PRIVATE

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor this
         0: .line 352
            aload 0 /* this */
            invokespecial com.oracle.svm.core.genscavenge.PathExhibitor$AbstractVisitor.<init>:()V
         1: .line 353
            return
        end local 0 // com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/svm/core/genscavenge/PathExhibitor$HeapObjRefVisitor;

  static boolean isInterfering(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.lang.Object currentObject
         0: .line 357
            aload 0 /* currentObject */
            instanceof com.oracle.svm.core.genscavenge.PathExhibitor$PathElement
            ifne 1
            aload 0 /* currentObject */
            instanceof com.oracle.svm.core.genscavenge.PathExhibitor$FindPathToObjectOperation
            ifne 1
            aload 0 /* currentObject */
            instanceof com.oracle.svm.core.genscavenge.PathExhibitor$TargetMatcher
            ifne 1
            iconst_0
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_1
            ireturn
        end local 0 // java.lang.Object currentObject
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0  currentObject  Ljava/lang/Object;
    RuntimeVisibleAnnotations: 
      com.oracle.svm.core.annotate.NeverInline(value = "Starting a stack walk in the caller frame")
    MethodParameters:
               Name  Flags
      currentObject  

  public void initialize(org.graalvm.word.Pointer, com.oracle.svm.core.genscavenge.PathExhibitor$TargetMatcher, com.oracle.svm.core.genscavenge.PathExhibitor$PathEdge);
    descriptor: (Lorg/graalvm/word/Pointer;Lcom/oracle/svm/core/genscavenge/PathExhibitor$TargetMatcher;Lcom/oracle/svm/core/genscavenge/PathExhibitor$PathEdge;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=4
        start local 0 // com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor this
        start local 1 // org.graalvm.word.Pointer container
        start local 2 // com.oracle.svm.core.genscavenge.PathExhibitor$TargetMatcher targetMatcher
        start local 3 // com.oracle.svm.core.genscavenge.PathExhibitor$PathEdge edge
         0: .line 361
            aload 0 /* this */
            aload 2 /* targetMatcher */
            aload 3 /* edge */
            invokespecial com.oracle.svm.core.genscavenge.PathExhibitor$AbstractVisitor.initialize:(Lcom/oracle/svm/core/genscavenge/PathExhibitor$TargetMatcher;Lcom/oracle/svm/core/genscavenge/PathExhibitor$PathEdge;)V
         1: .line 362
            aload 0 /* this */
            aload 1 /* container */
            putfield com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor.containerPointer:Lorg/graalvm/word/Pointer;
         2: .line 363
            return
        end local 3 // com.oracle.svm.core.genscavenge.PathExhibitor$PathEdge edge
        end local 2 // com.oracle.svm.core.genscavenge.PathExhibitor$TargetMatcher targetMatcher
        end local 1 // org.graalvm.word.Pointer container
        end local 0 // com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    3     0           this  Lcom/oracle/svm/core/genscavenge/PathExhibitor$HeapObjRefVisitor;
            0    3     1      container  Lorg/graalvm/word/Pointer;
            0    3     2  targetMatcher  Lcom/oracle/svm/core/genscavenge/PathExhibitor$TargetMatcher;
            0    3     3           edge  Lcom/oracle/svm/core/genscavenge/PathExhibitor$PathEdge;
    MethodParameters:
               Name  Flags
      container      
      targetMatcher  
      edge           

  public boolean visitObjectReference(org.graalvm.word.Pointer, boolean);
    descriptor: (Lorg/graalvm/word/Pointer;Z)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=6, args_size=3
        start local 0 // com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor this
        start local 1 // org.graalvm.word.Pointer objRef
        start local 2 // boolean compressed
         0: .line 367
            aload 1 /* objRef */
            invokeinterface org.graalvm.word.Pointer.isNull:()Z
            ifeq 2
         1: .line 368
            iconst_1
            ireturn
         2: .line 370
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor.containerPointer:Lorg/graalvm/word/Pointer;
            invokeinterface org.graalvm.word.Pointer.toObject:()Ljava/lang/Object;
            astore 3 /* containerObject */
        start local 3 // java.lang.Object containerObject
         3: .line 371
            aload 3 /* containerObject */
            invokestatic com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor.isInterfering:(Ljava/lang/Object;)Z
            ifne 9
         4: .line 372
            invokestatic com.oracle.svm.core.heap.ReferenceAccess.singleton:()Lcom/oracle/svm/core/heap/ReferenceAccess;
            aload 1 /* objRef */
            iload 2 /* compressed */
            invokeinterface com.oracle.svm.core.heap.ReferenceAccess.readObjectAsUntrackedPointer:(Lorg/graalvm/word/Pointer;Z)Lorg/graalvm/compiler/word/Word;
            astore 4 /* referentPointer */
        start local 4 // org.graalvm.word.Pointer referentPointer
         5: .line 373
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor.target:Lcom/oracle/svm/core/genscavenge/PathExhibitor$TargetMatcher;
            aload 4 /* referentPointer */
            invokeinterface org.graalvm.word.Pointer.toObject:()Ljava/lang/Object;
            invokeinterface com.oracle.svm.core.genscavenge.PathExhibitor$TargetMatcher.matches:(Ljava/lang/Object;)Z
            ifeq 9
         6: .line 374
            aload 1 /* objRef */
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor.containerPointer:Lorg/graalvm/word/Pointer;
            invokeinterface org.graalvm.word.Pointer.subtract:(Lorg/graalvm/word/UnsignedWord;)Lorg/graalvm/word/Pointer;
            astore 5 /* offset */
        start local 5 // org.graalvm.word.UnsignedWord offset
         7: .line 375
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor.result:Lcom/oracle/svm/core/genscavenge/PathExhibitor$PathEdge;
            new com.oracle.svm.core.genscavenge.PathExhibitor$HeapElement
            dup
            aload 3 /* containerObject */
            aload 5 /* offset */
            invokespecial com.oracle.svm.core.genscavenge.PathExhibitor$HeapElement.<init>:(Ljava/lang/Object;Lorg/graalvm/word/UnsignedWord;)V
            new com.oracle.svm.core.genscavenge.PathExhibitor$LeafElement
            dup
            aload 4 /* referentPointer */
            invokeinterface org.graalvm.word.Pointer.toObject:()Ljava/lang/Object;
            invokespecial com.oracle.svm.core.genscavenge.PathExhibitor$LeafElement.<init>:(Ljava/lang/Object;)V
            invokevirtual com.oracle.svm.core.genscavenge.PathExhibitor$PathEdge.fill:(Lcom/oracle/svm/core/genscavenge/PathExhibitor$PathElement;Lcom/oracle/svm/core/genscavenge/PathExhibitor$PathElement;)V
         8: .line 376
            iconst_0
            ireturn
        end local 5 // org.graalvm.word.UnsignedWord offset
        end local 4 // org.graalvm.word.Pointer referentPointer
         9: .line 379
      StackMap locals: java.lang.Object
      StackMap stack:
            iconst_1
            ireturn
        end local 3 // java.lang.Object containerObject
        end local 2 // boolean compressed
        end local 1 // org.graalvm.word.Pointer objRef
        end local 0 // com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0   10     0             this  Lcom/oracle/svm/core/genscavenge/PathExhibitor$HeapObjRefVisitor;
            0   10     1           objRef  Lorg/graalvm/word/Pointer;
            0   10     2       compressed  Z
            3   10     3  containerObject  Ljava/lang/Object;
            5    9     4  referentPointer  Lorg/graalvm/word/Pointer;
            7    9     5           offset  Lorg/graalvm/word/UnsignedWord;
    MethodParameters:
            Name  Flags
      objRef      
      compressed  
}
SourceFile: "PathExhibitor.java"
NestHost: com.oracle.svm.core.genscavenge.PathExhibitor
InnerClasses:
  AbstractVisitor = com.oracle.svm.core.genscavenge.PathExhibitor$AbstractVisitor of com.oracle.svm.core.genscavenge.PathExhibitor
  private final FindPathToObjectOperation = com.oracle.svm.core.genscavenge.PathExhibitor$FindPathToObjectOperation of com.oracle.svm.core.genscavenge.PathExhibitor
  public HeapElement = com.oracle.svm.core.genscavenge.PathExhibitor$HeapElement of com.oracle.svm.core.genscavenge.PathExhibitor
  private HeapObjRefVisitor = com.oracle.svm.core.genscavenge.PathExhibitor$HeapObjRefVisitor of com.oracle.svm.core.genscavenge.PathExhibitor
  public LeafElement = com.oracle.svm.core.genscavenge.PathExhibitor$LeafElement of com.oracle.svm.core.genscavenge.PathExhibitor
  public PathEdge = com.oracle.svm.core.genscavenge.PathExhibitor$PathEdge of com.oracle.svm.core.genscavenge.PathExhibitor
  public abstract PathElement = com.oracle.svm.core.genscavenge.PathExhibitor$PathElement of com.oracle.svm.core.genscavenge.PathExhibitor
  abstract TargetMatcher = com.oracle.svm.core.genscavenge.PathExhibitor$TargetMatcher of com.oracle.svm.core.genscavenge.PathExhibitor