https://www.graalvm.org/ 
class com.oracle.truffle.api.test.polyglot.ContextAPITest$4 implements java.lang.Runnable
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.api.test.polyglot.ContextAPITest$4
  super_class: java.lang.Object
{
  final com.oracle.truffle.api.test.polyglot.ContextAPITest this$0;
    descriptor: Lcom/oracle/truffle/api/test/polyglot/ContextAPITest;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final org.graalvm.polyglot.Context val$c;
    descriptor: Lorg/graalvm/polyglot/Context;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.truffle.api.test.polyglot.ContextAPITest, org.graalvm.polyglot.Context);
    descriptor: (Lcom/oracle/truffle/api/test/polyglot/ContextAPITest;Lorg/graalvm/polyglot/Context;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.test.polyglot.ContextAPITest$4 this
         0: .line 836
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.test.polyglot.ContextAPITest$4.this$0:Lcom/oracle/truffle/api/test/polyglot/ContextAPITest;
            aload 0 /* this */
            aload 2
            putfield com.oracle.truffle.api.test.polyglot.ContextAPITest$4.val$c:Lorg/graalvm/polyglot/Context;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.api.test.polyglot.ContextAPITest$4 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/test/polyglot/ContextAPITest$4;
    MethodParameters:
        Name  Flags
      this$0  final
      val$c   final

  public void run();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.test.polyglot.ContextAPITest$4 this
         0: .line 838
            aload 0 /* this */
            getfield com.oracle.truffle.api.test.polyglot.ContextAPITest$4.val$c:Lorg/graalvm/polyglot/Context;
            invokestatic com.oracle.truffle.api.test.polyglot.ContextAPITest.testGetContext:(Lorg/graalvm/polyglot/Context;)V
         1: .line 840
            new com.oracle.truffle.api.test.polyglot.ContextAPITest$4$1
            dup
            aload 0 /* this */
            aload 0 /* this */
            getfield com.oracle.truffle.api.test.polyglot.ContextAPITest$4.val$c:Lorg/graalvm/polyglot/Context;
            invokespecial com.oracle.truffle.api.test.polyglot.ContextAPITest$4$1.<init>:(Lcom/oracle/truffle/api/test/polyglot/ContextAPITest$4;Lorg/graalvm/polyglot/Context;)V
            invokestatic org.graalvm.polyglot.Value.asValue:(Ljava/lang/Object;)Lorg/graalvm/polyglot/Value;
            iconst_0
            anewarray java.lang.Object
         2: .line 844
            invokevirtual org.graalvm.polyglot.Value.execute:([Ljava/lang/Object;)Lorg/graalvm/polyglot/Value;
            pop
         3: .line 845
            return
        end local 0 // com.oracle.truffle.api.test.polyglot.ContextAPITest$4 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lcom/oracle/truffle/api/test/polyglot/ContextAPITest$4;
}
SourceFile: "ContextAPITest.java"
EnclosingMethod: com.oracle.truffle.api.test.polyglot.ContextAPITest.testEnteredContextInJava:()V
NestHost: com.oracle.truffle.api.test.polyglot.ContextAPITest
InnerClasses:
  com.oracle.truffle.api.test.polyglot.ContextAPITest$4
  com.oracle.truffle.api.test.polyglot.ContextAPITest$4$1