if (verboseJNI) VM.sysWrite("JNI called: MonitorExit  \n");
if (traceJNI) VM.sysWrite("JNI called: MonitorExit  \n");
  private static int MonitorExit(int envJREF, int objJREF) {    if (verboseJNI) VM.sysWrite("JNI called: MonitorExit  \n");    VM_JNIEnvironment env;    try {      env = VM_Thread.getCurrentThread().getJNIEnv();      Object obj = (Object) env.getJNIRef(objJREF);      VM_ObjectModel.genericUnlock(obj);      return 0;    } catch (Throwable unexpected) {      return -1;    }  }