https://www.graalvm.org/ 
class com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 implements com.oracle.truffle.api.instrumentation.ExecutionEventListener
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1
  super_class: java.lang.Object
{
  final com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument this$1;
    descriptor: Lcom/oracle/truffle/api/debug/test/DebuggerSessionTest$SuspendDebuggerFromInstrument;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final java.util.concurrent.atomic.AtomicReference val$sessionNodeRef;
    descriptor: Ljava/util/concurrent/atomic/AtomicReference;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument, java.util.concurrent.atomic.AtomicReference);
    descriptor: (Lcom/oracle/truffle/api/debug/test/DebuggerSessionTest$SuspendDebuggerFromInstrument;Ljava/util/concurrent/atomic/AtomicReference;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 this
         0: .line 273
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1.this$1:Lcom/oracle/truffle/api/debug/test/DebuggerSessionTest$SuspendDebuggerFromInstrument;
            aload 0 /* this */
            aload 2
            putfield com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1.val$sessionNodeRef:Ljava/util/concurrent/atomic/AtomicReference;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/debug/test/DebuggerSessionTest$SuspendDebuggerFromInstrument$1;
    MethodParameters:
                    Name  Flags
      this$0              final
      val$sessionNodeRef  final

  public void onEnter(com.oracle.truffle.api.instrumentation.EventContext, com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/instrumentation/EventContext;Lcom/oracle/truffle/api/frame/VirtualFrame;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=3
        start local 0 // com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 this
        start local 1 // com.oracle.truffle.api.instrumentation.EventContext context
        start local 2 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 278
            aload 0 /* this */
            getfield com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1.val$sessionNodeRef:Ljava/util/concurrent/atomic/AtomicReference;
            invokevirtual java.util.concurrent.atomic.AtomicReference.get:()Ljava/lang/Object;
            checkcast org.graalvm.collections.Pair
            astore 3 /* sessionNode */
        start local 3 // org.graalvm.collections.Pair sessionNode
         1: .line 279
            aload 3 /* sessionNode */
            invokevirtual org.graalvm.collections.Pair.getRight:()Ljava/lang/Object;
            checkcast java.util.function.Function
            aload 1 /* context */
            invokevirtual com.oracle.truffle.api.instrumentation.EventContext.getInstrumentedNode:()Lcom/oracle/truffle/api/nodes/Node;
            invokeinterface java.util.function.Function.apply:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast com.oracle.truffle.api.nodes.Node
            astore 4 /* node */
        start local 4 // com.oracle.truffle.api.nodes.Node node
         2: .line 280
            aload 3 /* sessionNode */
            invokevirtual org.graalvm.collections.Pair.getLeft:()Ljava/lang/Object;
            checkcast com.oracle.truffle.api.debug.DebuggerSession
            aload 4 /* node */
            invokevirtual com.oracle.truffle.api.debug.DebuggerSession.suspendHere:(Lcom/oracle/truffle/api/nodes/Node;)Z
            invokestatic org.junit.Assert.assertTrue:(Z)V
         3: .line 281
            return
        end local 4 // com.oracle.truffle.api.nodes.Node node
        end local 3 // org.graalvm.collections.Pair sessionNode
        end local 2 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 1 // com.oracle.truffle.api.instrumentation.EventContext context
        end local 0 // com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    4     0         this  Lcom/oracle/truffle/api/debug/test/DebuggerSessionTest$SuspendDebuggerFromInstrument$1;
            0    4     1      context  Lcom/oracle/truffle/api/instrumentation/EventContext;
            0    4     2        frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            1    4     3  sessionNode  Lorg/graalvm/collections/Pair<Lcom/oracle/truffle/api/debug/DebuggerSession;Ljava/util/function/Function<Lcom/oracle/truffle/api/nodes/Node;Lcom/oracle/truffle/api/nodes/Node;>;>;
            2    4     4         node  Lcom/oracle/truffle/api/nodes/Node;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.CompilerDirectives$TruffleBoundary()
    MethodParameters:
         Name  Flags
      context  
      frame    

  public void onReturnValue(com.oracle.truffle.api.instrumentation.EventContext, com.oracle.truffle.api.frame.VirtualFrame, java.lang.Object);
    descriptor: (Lcom/oracle/truffle/api/instrumentation/EventContext;Lcom/oracle/truffle/api/frame/VirtualFrame;Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=4, args_size=4
        start local 0 // com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 this
        start local 1 // com.oracle.truffle.api.instrumentation.EventContext context
        start local 2 // com.oracle.truffle.api.frame.VirtualFrame frame
        start local 3 // java.lang.Object result
         0: .line 285
            return
        end local 3 // java.lang.Object result
        end local 2 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 1 // com.oracle.truffle.api.instrumentation.EventContext context
        end local 0 // com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lcom/oracle/truffle/api/debug/test/DebuggerSessionTest$SuspendDebuggerFromInstrument$1;
            0    1     1  context  Lcom/oracle/truffle/api/instrumentation/EventContext;
            0    1     2    frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            0    1     3   result  Ljava/lang/Object;
    MethodParameters:
         Name  Flags
      context  
      frame    
      result   

  public void onReturnExceptional(com.oracle.truffle.api.instrumentation.EventContext, com.oracle.truffle.api.frame.VirtualFrame, java.lang.Throwable);
    descriptor: (Lcom/oracle/truffle/api/instrumentation/EventContext;Lcom/oracle/truffle/api/frame/VirtualFrame;Ljava/lang/Throwable;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=4, args_size=4
        start local 0 // com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 this
        start local 1 // com.oracle.truffle.api.instrumentation.EventContext context
        start local 2 // com.oracle.truffle.api.frame.VirtualFrame frame
        start local 3 // java.lang.Throwable exception
         0: .line 289
            return
        end local 3 // java.lang.Throwable exception
        end local 2 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 1 // com.oracle.truffle.api.instrumentation.EventContext context
        end local 0 // com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1 this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0       this  Lcom/oracle/truffle/api/debug/test/DebuggerSessionTest$SuspendDebuggerFromInstrument$1;
            0    1     1    context  Lcom/oracle/truffle/api/instrumentation/EventContext;
            0    1     2      frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            0    1     3  exception  Ljava/lang/Throwable;
    MethodParameters:
           Name  Flags
      context    
      frame      
      exception  
}
SourceFile: "DebuggerSessionTest.java"
EnclosingMethod: com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument.onCreate:(Lcom/oracle/truffle/api/instrumentation/TruffleInstrument$Env;)V
NestHost: com.oracle.truffle.api.debug.test.DebuggerSessionTest
InnerClasses:
  public abstract TruffleBoundary = com.oracle.truffle.api.CompilerDirectives$TruffleBoundary of com.oracle.truffle.api.CompilerDirectives
  public SuspendDebuggerFromInstrument = com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument of com.oracle.truffle.api.debug.test.DebuggerSessionTest
  com.oracle.truffle.api.debug.test.DebuggerSessionTest$SuspendDebuggerFromInstrument$1
  public final Env = com.oracle.truffle.api.instrumentation.TruffleInstrument$Env of com.oracle.truffle.api.instrumentation.TruffleInstrument