ServiceSubscription 
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``com.connectsdk.service.command.ServiceSubscription``

Methods
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void **unsubscribe** ()

T **addListener** (T *listener*)

    **Parameters:**
        * listener – (optional) T with methods to be called on success or failure

void **removeListener** (T *listener*)

    **Parameters:**
        * listener – (optional) T with methods to be called on success or failure

List<T> **getListeners** ()