public static void execute(ExecutablePool pool, ServerLocation serverLocation,
      DistributedMember serverID) {
    AbstractOp op = new PingOpImpl(serverID);
    pool.executeOn(serverLocation, op, false, false);
  }
Ping the specified server to see if it is still alive

@param pool the pool to use to communicate with the server.
@param serverLocation the server to do the execution on
geode-core/src/main/java/org/apache/geode/cache/client/internal/PingOp.java