https://www.graalvm.org/ 
class com.oracle.graal.pointsto.ObjectScanner$2 implements com.oracle.graal.pointsto.util.CompletionExecutor$DebugContextRunnable
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.graal.pointsto.ObjectScanner$2
  super_class: java.lang.Object
{
  final com.oracle.graal.pointsto.ObjectScanner this$0;
    descriptor: Lcom/oracle/graal/pointsto/ObjectScanner;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final com.oracle.graal.pointsto.util.CompletionExecutor val$exec;
    descriptor: Lcom/oracle/graal/pointsto/util/CompletionExecutor;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.graal.pointsto.ObjectScanner, com.oracle.graal.pointsto.util.CompletionExecutor);
    descriptor: (Lcom/oracle/graal/pointsto/ObjectScanner;Lcom/oracle/graal/pointsto/util/CompletionExecutor;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.graal.pointsto.ObjectScanner$2 this
         0: .line 369
            aload 0 /* this */
            aload 1
            putfield com.oracle.graal.pointsto.ObjectScanner$2.this$0:Lcom/oracle/graal/pointsto/ObjectScanner;
            aload 0 /* this */
            aload 2
            putfield com.oracle.graal.pointsto.ObjectScanner$2.val$exec:Lcom/oracle/graal/pointsto/util/CompletionExecutor;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.graal.pointsto.ObjectScanner$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/graal/pointsto/ObjectScanner$2;
    MethodParameters:
          Name  Flags
      this$0    final
      val$exec  final

  public void run(org.graalvm.compiler.debug.DebugContext);
    descriptor: (Lorg/graalvm/compiler/debug/DebugContext;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=5, args_size=2
        start local 0 // com.oracle.graal.pointsto.ObjectScanner$2 this
        start local 1 // org.graalvm.compiler.debug.DebugContext ignored
         0: .line 372
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.this$0:Lcom/oracle/graal/pointsto/ObjectScanner;
            getfield com.oracle.graal.pointsto.ObjectScanner.workInProgressCount:Ljava/util/concurrent/atomic/AtomicLong;
            invokevirtual java.util.concurrent.atomic.AtomicLong.get:()J
            lconst_0
            lcmp
            ifle 11
         1: .line 373
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.this$0:Lcom/oracle/graal/pointsto/ObjectScanner;
            getfield com.oracle.graal.pointsto.ObjectScanner.worklist:Ljava/util/Deque;
            invokeinterface java.util.Deque.size:()I
            istore 2 /* worklistLength */
        start local 2 // int worklistLength
         2: .line 374
            goto 9
         3: .line 376
      StackMap locals: int
      StackMap stack:
            iconst_1
            iload 2 /* worklistLength */
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.this$0:Lcom/oracle/graal/pointsto/ObjectScanner;
            getfield com.oracle.graal.pointsto.ObjectScanner.worklist:Ljava/util/Deque;
            invokeinterface java.util.Deque.size:()I
            invokestatic java.lang.Integer.max:(II)I
            iconst_2
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.val$exec:Lcom/oracle/graal/pointsto/util/CompletionExecutor;
            invokevirtual com.oracle.graal.pointsto.util.CompletionExecutor.getExecutorService:()Ljava/util/concurrent/ForkJoinPool;
            invokevirtual java.util.concurrent.ForkJoinPool.getPoolSize:()I
            imul
            idiv
            invokestatic java.lang.Integer.max:(II)I
            istore 3 /* bucketSize */
        start local 3 // int bucketSize
         4: .line 377
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            astore 4 /* items */
        start local 4 // java.util.ArrayList items
         5: .line 378
            goto 7
         6: .line 379
      StackMap locals: int java.util.ArrayList
      StackMap stack:
            aload 4 /* items */
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.this$0:Lcom/oracle/graal/pointsto/ObjectScanner;
            getfield com.oracle.graal.pointsto.ObjectScanner.worklist:Ljava/util/Deque;
            invokeinterface java.util.Deque.remove:()Ljava/lang/Object;
            checkcast com.oracle.graal.pointsto.ObjectScanner$WorklistEntry
            invokevirtual java.util.ArrayList.add:(Ljava/lang/Object;)Z
            pop
         7: .line 378
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.this$0:Lcom/oracle/graal/pointsto/ObjectScanner;
            getfield com.oracle.graal.pointsto.ObjectScanner.worklist:Ljava/util/Deque;
            invokeinterface java.util.Deque.isEmpty:()Z
            ifne 8
            aload 4 /* items */
            invokevirtual java.util.ArrayList.size:()I
            iload 3 /* bucketSize */
            if_icmplt 6
         8: .line 381
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.val$exec:Lcom/oracle/graal/pointsto/util/CompletionExecutor;
            new com.oracle.graal.pointsto.ObjectScanner$2$1
            dup
            aload 0 /* this */
            aload 4 /* items */
            invokespecial com.oracle.graal.pointsto.ObjectScanner$2$1.<init>:(Lcom/oracle/graal/pointsto/ObjectScanner$2;Ljava/util/ArrayList;)V
            invokevirtual com.oracle.graal.pointsto.util.CompletionExecutor.execute:(Lcom/oracle/graal/pointsto/util/CompletionExecutor$DebugContextRunnable;)V
        end local 4 // java.util.ArrayList items
        end local 3 // int bucketSize
         9: .line 374
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.this$0:Lcom/oracle/graal/pointsto/ObjectScanner;
            getfield com.oracle.graal.pointsto.ObjectScanner.worklist:Ljava/util/Deque;
            invokeinterface java.util.Deque.isEmpty:()Z
            ifeq 3
        10: .line 403
            aload 0 /* this */
            getfield com.oracle.graal.pointsto.ObjectScanner$2.val$exec:Lcom/oracle/graal/pointsto/util/CompletionExecutor;
            aload 0 /* this */
            invokevirtual com.oracle.graal.pointsto.util.CompletionExecutor.execute:(Lcom/oracle/graal/pointsto/util/CompletionExecutor$DebugContextRunnable;)V
        end local 2 // int worklistLength
        11: .line 405
      StackMap locals:
      StackMap stack:
            return
        end local 1 // org.graalvm.compiler.debug.DebugContext ignored
        end local 0 // com.oracle.graal.pointsto.ObjectScanner$2 this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0   12     0            this  Lcom/oracle/graal/pointsto/ObjectScanner$2;
            0   12     1         ignored  Lorg/graalvm/compiler/debug/DebugContext;
            2   11     2  worklistLength  I
            4    9     3      bucketSize  I
            5    9     4           items  Ljava/util/ArrayList<Lcom/oracle/graal/pointsto/ObjectScanner$WorklistEntry;>;
    MethodParameters:
         Name  Flags
      ignored  

  static com.oracle.graal.pointsto.ObjectScanner access$0(com.oracle.graal.pointsto.ObjectScanner$2);
    descriptor: (Lcom/oracle/graal/pointsto/ObjectScanner$2;)Lcom/oracle/graal/pointsto/ObjectScanner;
    flags: (0x1008) ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 369
            aload 0
            getfield com.oracle.graal.pointsto.ObjectScanner$2.this$0:Lcom/oracle/graal/pointsto/ObjectScanner;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "ObjectScanner.java"
EnclosingMethod: com.oracle.graal.pointsto.ObjectScanner.finish:(Lcom/oracle/graal/pointsto/util/CompletionExecutor;)V
NestHost: com.oracle.graal.pointsto.ObjectScanner
InnerClasses:
  com.oracle.graal.pointsto.ObjectScanner$2
  com.oracle.graal.pointsto.ObjectScanner$2$1
  WorklistEntry = com.oracle.graal.pointsto.ObjectScanner$WorklistEntry of com.oracle.graal.pointsto.ObjectScanner
  public abstract DebugContextRunnable = com.oracle.graal.pointsto.util.CompletionExecutor$DebugContextRunnable of com.oracle.graal.pointsto.util.CompletionExecutor