https://www.graalvm.org/ 
class com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1 implements java.lang.Runnable
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1
  super_class: java.lang.Object
{
  private final org.graalvm.polyglot.Context val$c;
    descriptor: Lorg/graalvm/polyglot/Context;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(org.graalvm.polyglot.Context);
    descriptor: (Lorg/graalvm/polyglot/Context;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1 this
         0: .line 461
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1.val$c:Lorg/graalvm/polyglot/Context;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/instrumentation/test/ResourceLimitsTest$1;
    MethodParameters:
       Name  Flags
      val$c  final

  public void run();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1 this
         0: .line 463
            aload 0 /* this */
            getfield com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1.val$c:Lorg/graalvm/polyglot/Context;
            invokevirtual org.graalvm.polyglot.Context.enter:()V
         1: .line 464
            aload 0 /* this */
            getfield com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1.val$c:Lorg/graalvm/polyglot/Context;
            invokevirtual org.graalvm.polyglot.Context.leave:()V
         2: .line 465
            return
        end local 0 // com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/truffle/api/instrumentation/test/ResourceLimitsTest$1;
}
SourceFile: "ResourceLimitsTest.java"
EnclosingMethod: com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest.forceMultiThreading:(Ljava/util/concurrent/ExecutorService;Lorg/graalvm/polyglot/Context;)V
NestHost: com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest
InnerClasses:
  com.oracle.truffle.api.instrumentation.test.ResourceLimitsTest$1