No, you can’t. The trunk always fires a sync event in response to success. However, you can make a wrapper and fire another event. therefore you avoid depending on the synchronization event.
self.listenTo(self.model, 'mysync', self.subscriberParameterSyncSuccesfully);
Model:
myfetch: function (option) {
this.fetch.call(this, option);
this.trigger('mysync', this);
}
self.model.myfetch(option);
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