https://www.graalvm.org/ 
class com.oracle.truffle.object.basic.test.TestDynamicObjectDefault extends com.oracle.truffle.object.basic.test.TestDynamicObject
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.object.basic.test.TestDynamicObjectDefault
  super_class: com.oracle.truffle.object.basic.test.TestDynamicObject
{
  java.lang.Object o0;
    descriptor: Ljava/lang/Object;
    flags: (0x0000) 
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.object.DynamicObject$DynamicField()

  java.lang.Object o1;
    descriptor: Ljava/lang/Object;
    flags: (0x0000) 
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.object.DynamicObject$DynamicField()

  java.lang.Object o2;
    descriptor: Ljava/lang/Object;
    flags: (0x0000) 
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.object.DynamicObject$DynamicField()

  java.lang.Object o3;
    descriptor: Ljava/lang/Object;
    flags: (0x0000) 
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.object.DynamicObject$DynamicField()

  long p0;
    descriptor: J
    flags: (0x0000) 
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.object.DynamicObject$DynamicField()

  long p1;
    descriptor: J
    flags: (0x0000) 
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.object.DynamicObject$DynamicField()

  long p2;
    descriptor: J
    flags: (0x0000) 
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.object.DynamicObject$DynamicField()

  protected void <init>(com.oracle.truffle.api.object.Shape);
    descriptor: (Lcom/oracle/truffle/api/object/Shape;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.object.basic.test.TestDynamicObjectDefault this
        start local 1 // com.oracle.truffle.api.object.Shape shape
         0: .line 55
            aload 0 /* this */
            aload 1 /* shape */
            invokespecial com.oracle.truffle.object.basic.test.TestDynamicObject.<init>:(Lcom/oracle/truffle/api/object/Shape;)V
         1: .line 56
            return
        end local 1 // com.oracle.truffle.api.object.Shape shape
        end local 0 // com.oracle.truffle.object.basic.test.TestDynamicObjectDefault this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/object/basic/test/TestDynamicObjectDefault;
            0    2     1  shape  Lcom/oracle/truffle/api/object/Shape;
    MethodParameters:
       Name  Flags
      shape  
}
SourceFile: "TestDynamicObjectDefault.java"
InnerClasses:
  protected abstract DynamicField = com.oracle.truffle.api.object.DynamicObject$DynamicField of com.oracle.truffle.api.object.DynamicObject