if (verboseJNI) VM.sysWrite("JNI called: CallVoidMethodA  \n");
if (traceJNI) VM.sysWrite("JNI called: CallVoidMethodA  \n");
  private static void CallVoidMethodA(int envJREF, int objJREF, int methodID, VM_Address argAddress)    throws Exception {      if (verboseJNI) VM.sysWrite("JNI called: CallVoidMethodA  \n");      VM_JNIEnvironment env;      try {        // dereference the object instance        env = VM_Thread.getCurrentThread().getJNIEnv();            Object obj =  env.getJNIRef(objJREF);        VM_JNIEnvironment.invokeWithJValue(obj, methodID, argAddress, VM_Type.VoidType, false);      } catch (Throwable unexpected) {        env = VM_Thread.getCurrentThread().getJNIEnv();        env.recordException(unexpected);      }    }