https://www.graalvm.org/ 
public class com.oracle.truffle.llvm.tests.interop.DerefHandleTest$TestCallDerefHandleNode extends com.oracle.truffle.llvm.tests.interop.InteropTestBase$SulongTestNode
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.truffle.llvm.tests.interop.DerefHandleTest$TestCallDerefHandleNode
  super_class: com.oracle.truffle.llvm.tests.interop.InteropTestBase$SulongTestNode
{
  final com.oracle.truffle.llvm.tests.interop.DerefHandleTest this$0;
    descriptor: Lcom/oracle/truffle/llvm/tests/interop/DerefHandleTest;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  public void <init>(com.oracle.truffle.llvm.tests.interop.DerefHandleTest);
    descriptor: (Lcom/oracle/truffle/llvm/tests/interop/DerefHandleTest;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.oracle.truffle.llvm.tests.interop.DerefHandleTest$TestCallDerefHandleNode this
         0: .line 91
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.llvm.tests.interop.DerefHandleTest$TestCallDerefHandleNode.this$0:Lcom/oracle/truffle/llvm/tests/interop/DerefHandleTest;
         1: .line 92
            aload 0 /* this */
            getstatic com.oracle.truffle.llvm.tests.interop.DerefHandleTest.testLibrary:Ljava/lang/Object;
            ldc "test_call_deref_handle"
            invokespecial com.oracle.truffle.llvm.tests.interop.InteropTestBase$SulongTestNode.<init>:(Ljava/lang/Object;Ljava/lang/String;)V
         2: .line 93
            return
        end local 0 // com.oracle.truffle.llvm.tests.interop.DerefHandleTest$TestCallDerefHandleNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/truffle/llvm/tests/interop/DerefHandleTest$TestCallDerefHandleNode;
    MethodParameters:
        Name  Flags
      this$0  final
}
SourceFile: "DerefHandleTest.java"
NestHost: com.oracle.truffle.llvm.tests.interop.DerefHandleTest
InnerClasses:
  public TestCallDerefHandleNode = com.oracle.truffle.llvm.tests.interop.DerefHandleTest$TestCallDerefHandleNode of com.oracle.truffle.llvm.tests.interop.DerefHandleTest
  public SulongTestNode = com.oracle.truffle.llvm.tests.interop.InteropTestBase$SulongTestNode of com.oracle.truffle.llvm.tests.interop.InteropTestBase