https://www.graalvm.org/ 
class com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject implements com.oracle.truffle.api.interop.TruffleObject
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject
  super_class: java.lang.Object
{
  final int identity;
    descriptor: I
    flags: (0x0010) ACC_FINAL

  void <init>(int);
    descriptor: (I)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject this
        start local 1 // int identity
         0: .line 68
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 69
            aload 0 /* this */
            iload 1 /* identity */
            putfield com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject.identity:I
         2: .line 70
            return
        end local 1 // int identity
        end local 0 // com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0      this  Lcom/oracle/truffle/llvm/tests/interop/DeprecatedPointerCompareTest$ReferenceEqualObject;
            0    3     1  identity  I
    MethodParameters:
          Name  Flags
      identity  

  void toNative();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject this
         0: .line 89
            ldc "unexpected toNative"
            invokestatic org.junit.Assert.fail:(Ljava/lang/String;)V
         1: .line 90
            return
        end local 0 // com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/truffle/llvm/tests/interop/DeprecatedPointerCompareTest$ReferenceEqualObject;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
}
SourceFile: "DeprecatedPointerCompareTest.java"
NestHost: com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest
InnerClasses:
  public abstract Repeat = com.oracle.truffle.api.library.ExportLibrary$Repeat of com.oracle.truffle.api.library.ExportLibrary
  ReferenceEqualObject = com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject of com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest
  IsSame = com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject$IsSame of com.oracle.truffle.llvm.tests.interop.DeprecatedPointerCompareTest$ReferenceEqualObject
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportLibrary$Repeat(value = {com.oracle.truffle.api.library.ExportLibrary(value = Lcom/oracle/truffle/llvm/spi/ReferenceLibrary;), com.oracle.truffle.api.library.ExportLibrary(value = Lcom/oracle/truffle/api/interop/InteropLibrary;)})