# CallbackReference

fun interface CallbackReference

A reference to a Mobile Payments SDK Callback that can be cleared to prevent memory leaks. It is recommended to clear the reference any time a lifecycle destroy event occurs (e.g. android.app.Activity.onDestroy or `ViewModel.onCleared()`). It can also be cleared when the Callback is no longer needed and should not be invoked.

## Functions

clear
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abstract fun clear()

Clears the reference to a Mobile Payments SDK Callback. After this method is called, the Callback will no longer be invoked.