https://www.graalvm.org/ 
public class com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled
  super_class: java.lang.Object
{
  final org.graalvm.polyglot.Source source;
    descriptor: Lorg/graalvm/polyglot/Source;
    flags: (0x0010) ACC_FINAL

  final org.graalvm.polyglot.Context context;
    descriptor: Lorg/graalvm/polyglot/Context;
    flags: (0x0010) ACC_FINAL

  final java.lang.Integer intValue;
    descriptor: Ljava/lang/Integer;
    flags: (0x0010) ACC_FINAL

  final com.oracle.truffle.api.CallTarget callTarget;
    descriptor: Lcom/oracle/truffle/api/CallTarget;
    flags: (0x0010) ACC_FINAL

  private final com.oracle.truffle.api.nodes.Node node;
    descriptor: Lcom/oracle/truffle/api/nodes/Node;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled this
         0: .line 65
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 66
            aload 0 /* this */
            ldc "benchmark-test-language"
            ldc ""
            invokestatic org.graalvm.polyglot.Source.create:(Ljava/lang/String;Ljava/lang/CharSequence;)Lorg/graalvm/polyglot/Source;
            putfield com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled.source:Lorg/graalvm/polyglot/Source;
         2: .line 67
            aload 0 /* this */
            iconst_1
            anewarray java.lang.String
            dup
            iconst_0
            ldc "benchmark-test-language"
            aastore
            invokestatic org.graalvm.polyglot.Context.create:([Ljava/lang/String;)Lorg/graalvm/polyglot/Context;
            putfield com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled.context:Lorg/graalvm/polyglot/Context;
         3: .line 69
            aload 0 /* this */
            getfield com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled.context:Lorg/graalvm/polyglot/Context;
            ldc "benchmark-test-language"
            invokevirtual org.graalvm.polyglot.Context.initialize:(Ljava/lang/String;)Z
            pop
         4: .line 71
            aload 0 /* this */
            bipush 42
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            putfield com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled.intValue:Ljava/lang/Integer;
         5: .line 72
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            new com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled$1
            dup
            aload 0 /* this */
            aconst_null
            invokespecial com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled$1.<init>:(Lcom/oracle/truffle/api/benchmark/EncapsulatingNodeBenchmark$PushPopOldCompiled;Lcom/oracle/truffle/api/TruffleLanguage;)V
            invokeinterface com.oracle.truffle.api.TruffleRuntime.createCallTarget:(Lcom/oracle/truffle/api/nodes/RootNode;)Lcom/oracle/truffle/api/RootCallTarget;
            putfield com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled.callTarget:Lcom/oracle/truffle/api/CallTarget;
         6: .line 89
            aload 0 /* this */
            new com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled$2
            dup
            aload 0 /* this */
            invokespecial com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled$2.<init>:(Lcom/oracle/truffle/api/benchmark/EncapsulatingNodeBenchmark$PushPopOldCompiled;)V
            putfield com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled.node:Lcom/oracle/truffle/api/nodes/Node;
         7: .line 65
            return
        end local 0 // com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    8     0  this  Lcom/oracle/truffle/api/benchmark/EncapsulatingNodeBenchmark$PushPopOldCompiled;

  public void tearDown();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled this
         0: .line 94
            aload 0 /* this */
            getfield com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled.context:Lorg/graalvm/polyglot/Context;
            invokevirtual org.graalvm.polyglot.Context.close:()V
         1: .line 95
            return
        end local 0 // com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/truffle/api/benchmark/EncapsulatingNodeBenchmark$PushPopOldCompiled;
    RuntimeVisibleAnnotations: 
      org.openjdk.jmh.annotations.TearDown()
}
SourceFile: "EncapsulatingNodeBenchmark.java"
NestHost: com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark
InnerClasses:
  public PushPopOldCompiled = com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled of com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark
  com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled$1
  com.oracle.truffle.api.benchmark.EncapsulatingNodeBenchmark$PushPopOldCompiled$2
    RuntimeVisibleAnnotations: 
      org.openjdk.jmh.annotations.State(value = org.openjdk.jmh.annotations.Scope.Thread:Lorg/openjdk/jmh/annotations/Scope;)