private static void invokeRemoteClearAndWait(VM remoteVM,VM thisVM){
  remoteVM.invoke(null);
  try {
    clearLatch.await();
  }
 catch (  InterruptedException e) {
    fail("wait for remote clear to complete failed");
  }
}

private static void invokeRemoteClearAndWait ( VM remoteVM , VM thisVM ) { remoteVM . invoke ( null ) ; try { clearLatch . await ( ) ; } catch ( InterruptedException e ) { fail ( "wait for remote clear to complete failed" ) ; } }
this method clears the region and notifies the other member when complete
