transientCallbackCount property

@override int transientCallbackCount

The current number of transient frame callbacks scheduled.

This is reset to zero just before all the currently scheduled transient callbacks are called, at the start of a frame.

This number is primarily exposed so that tests can verify that there are no unexpected transient callbacks still registered after a test's resources have been gracefully disposed.

Implementation

@override
int get transientCallbackCount => throw UnimplementedError();