https://www.graalvm.org/ 
public class com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty implements com.oracle.truffle.js.runtime.objects.PropertyProxy
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty
  super_class: java.lang.Object
{
  private final com.oracle.truffle.js.runtime.JSContext context;
    descriptor: Lcom/oracle/truffle/js/runtime/JSContext;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>(com.oracle.truffle.js.runtime.JSContext);
    descriptor: (Lcom/oracle/truffle/js/runtime/JSContext;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty this
        start local 1 // com.oracle.truffle.js.runtime.JSContext context
         0: .line 934
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 935
            aload 0 /* this */
            aload 1 /* context */
            putfield com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty.context:Lcom/oracle/truffle/js/runtime/JSContext;
         2: .line 936
            return
        end local 1 // com.oracle.truffle.js.runtime.JSContext context
        end local 0 // com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    3     0     this  Lcom/oracle/truffle/js/runtime/builtins/JSFunction$CallerProxyProperty;
            0    3     1  context  Lcom/oracle/truffle/js/runtime/JSContext;
    MethodParameters:
         Name  Flags
      context  

  public java.lang.Object get(com.oracle.truffle.api.object.DynamicObject);
    descriptor: (Lcom/oracle/truffle/api/object/DynamicObject;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty this
        start local 1 // com.oracle.truffle.api.object.DynamicObject thiz
         0: .line 940
            aload 0 /* this */
            getfield com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty.context:Lcom/oracle/truffle/js/runtime/JSContext;
            invokevirtual com.oracle.truffle.js.runtime.JSContext.isOptionV8CompatibilityMode:()Z
            ifeq 2
         1: .line 941
            aload 1 /* thiz */
            invokestatic com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty.findCaller:(Lcom/oracle/truffle/api/object/DynamicObject;)Ljava/lang/Object;
            invokestatic com.oracle.truffle.js.runtime.JSRuntime.toJSNull:(Ljava/lang/Object;)Ljava/lang/Object;
            areturn
         2: .line 943
      StackMap locals:
      StackMap stack:
            getstatic com.oracle.truffle.js.runtime.objects.Undefined.instance:Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
            areturn
        end local 1 // com.oracle.truffle.api.object.DynamicObject thiz
        end local 0 // com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/truffle/js/runtime/builtins/JSFunction$CallerProxyProperty;
            0    3     1  thiz  Lcom/oracle/truffle/api/object/DynamicObject;
    MethodParameters:
      Name  Flags
      thiz  

  private static java.lang.Object findCaller(com.oracle.truffle.api.object.DynamicObject);
    descriptor: (Lcom/oracle/truffle/api/object/DynamicObject;)Ljava/lang/Object;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.object.DynamicObject thiz
         0: .line 949
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            new com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty$1
            dup
            aload 0 /* thiz */
            invokespecial com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty$1.<init>:(Lcom/oracle/truffle/api/object/DynamicObject;)V
            invokeinterface com.oracle.truffle.api.TruffleRuntime.iterateFrames:(Lcom/oracle/truffle/api/frame/FrameInstanceVisitor;)Ljava/lang/Object;
            areturn
        end local 0 // com.oracle.truffle.api.object.DynamicObject thiz
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  thiz  Lcom/oracle/truffle/api/object/DynamicObject;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.CompilerDirectives$TruffleBoundary()
    MethodParameters:
      Name  Flags
      thiz  
}
SourceFile: "JSFunction.java"
NestHost: com.oracle.truffle.js.runtime.builtins.JSFunction
InnerClasses:
  public abstract TruffleBoundary = com.oracle.truffle.api.CompilerDirectives$TruffleBoundary of com.oracle.truffle.api.CompilerDirectives
  public CallerProxyProperty = com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty of com.oracle.truffle.js.runtime.builtins.JSFunction
  com.oracle.truffle.js.runtime.builtins.JSFunction$CallerProxyProperty$1