Gearman中startGearmanServer和createGearmanServer之间有什么区别？

Gearman中startGearmanServer和createGearmanServer之间的区别是什么

gearman = Gearman.createGearman();
GearmanServer server = gearman.createGearmanServer("127.0.0.1", POST);

和startGearmanServer代码：

Gearman gearman = Gearman.createGearman();
GearmanServer server = gearman.startGearmanServer(POST);

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startGearmanServer：实例化GearmanServer。 createGearmanServer：只需获取GearmanServer