https://www.graalvm.org/ 
public interface com.oracle.truffle.js.runtime.EcmaAgent
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.runtime.EcmaAgent
  super_class: java.lang.Object
{
  public abstract boolean isTerminated();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract void terminate(int);
    descriptor: (I)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      timeout  
}
SourceFile: "EcmaAgent.java"