https://www.graalvm.org/ 
class com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1 extends com.oracle.truffle.api.nodes.RootNode
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1
  super_class: com.oracle.truffle.api.nodes.RootNode
{
  private final com.oracle.truffle.api.source.Source source;
    descriptor: Lcom/oracle/truffle/api/source/Source;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  final com.oracle.truffle.api.test.polyglot.ContextAPITest$1 this$1;
    descriptor: Lcom/oracle/truffle/api/test/polyglot/ContextAPITest$1;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

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

  private final java.lang.StringBuilder val$callArguments;
    descriptor: Ljava/lang/StringBuilder;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.truffle.api.test.polyglot.ContextAPITest$1, com.oracle.truffle.api.TruffleLanguage, com.oracle.truffle.api.TruffleLanguage$ParsingRequest, java.util.concurrent.atomic.AtomicInteger, java.lang.StringBuilder);
    descriptor: (Lcom/oracle/truffle/api/test/polyglot/ContextAPITest$1;Lcom/oracle/truffle/api/TruffleLanguage;Lcom/oracle/truffle/api/TruffleLanguage$ParsingRequest;Ljava/util/concurrent/atomic/AtomicInteger;Ljava/lang/StringBuilder;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=6, args_size=6
        start local 0 // com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1 this
        start local 2 // com.oracle.truffle.api.TruffleLanguage $anonymous0
         0: .line 326
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1.this$1:Lcom/oracle/truffle/api/test/polyglot/ContextAPITest$1;
            aload 0 /* this */
            aload 4
            putfield com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1.val$executeCalls:Ljava/util/concurrent/atomic/AtomicInteger;
            aload 0 /* this */
            aload 5
            putfield com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1.val$callArguments:Ljava/lang/StringBuilder;
            aload 0 /* this */
            aload 2 /* $anonymous0 */
            invokespecial com.oracle.truffle.api.nodes.RootNode.<init>:(Lcom/oracle/truffle/api/TruffleLanguage;)V
         1: .line 327
            aload 0 /* this */
            aload 3
            invokevirtual com.oracle.truffle.api.TruffleLanguage$ParsingRequest.getSource:()Lcom/oracle/truffle/api/source/Source;
            putfield com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1.source:Lcom/oracle/truffle/api/source/Source;
         2: .line 326
            return
        end local 2 // com.oracle.truffle.api.TruffleLanguage $anonymous0
        end local 0 // com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1 this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    3     0         this  Lcom/oracle/truffle/api/test/polyglot/ContextAPITest$1$1;
            0    3     2  $anonymous0  Lcom/oracle/truffle/api/TruffleLanguage<*>;
    MethodParameters:
                   Name  Flags
      this$0             final
      $anonymous0        
      val$request        final
      val$executeCalls   final
      val$callArguments  final

  public java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1 this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 331
            aload 0 /* this */
            getfield com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1.val$executeCalls:Ljava/util/concurrent/atomic/AtomicInteger;
            invokevirtual java.util.concurrent.atomic.AtomicInteger.incrementAndGet:()I
            pop
         1: .line 332
            aload 0 /* this */
            getfield com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1.val$callArguments:Ljava/lang/StringBuilder;
            ifnull 4
         2: .line 333
            invokestatic com.oracle.truffle.api.CompilerDirectives.transferToInterpreter:()V
         3: .line 334
            aload 0 /* this */
            getfield com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1.val$callArguments:Ljava/lang/StringBuilder;
            aload 1 /* frame */
            invokeinterface com.oracle.truffle.api.frame.VirtualFrame.getArguments:()[Ljava/lang/Object;
            invokestatic java.util.Arrays.toString:([Ljava/lang/Object;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         4: .line 336
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1.source:Lcom/oracle/truffle/api/source/Source;
            invokevirtual com.oracle.truffle.api.source.Source.getCharacters:()Ljava/lang/CharSequence;
            areturn
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1 this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    5     0   this  Lcom/oracle/truffle/api/test/polyglot/ContextAPITest$1$1;
            0    5     1  frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
    MethodParameters:
       Name  Flags
      frame  
}
SourceFile: "ContextAPITest.java"
EnclosingMethod: com.oracle.truffle.api.test.polyglot.ContextAPITest$1.parse:(Lcom/oracle/truffle/api/TruffleLanguage$ParsingRequest;)Lcom/oracle/truffle/api/CallTarget;
NestHost: com.oracle.truffle.api.test.polyglot.ContextAPITest
InnerClasses:
  public final ParsingRequest = com.oracle.truffle.api.TruffleLanguage$ParsingRequest of com.oracle.truffle.api.TruffleLanguage
  com.oracle.truffle.api.test.polyglot.ContextAPITest$1
  com.oracle.truffle.api.test.polyglot.ContextAPITest$1$1