fromInt
Converts from the Maps SDK com.google.android.gms.maps.GoogleMap.OnCameraMoveStartedListener constants to CameraMoveStartedReason, or returns UNKNOWN if there is no such CameraMoveStartedReason for the given value.
See https://developers.google.com/android/reference/com/google/android/gms/maps/GoogleMap.OnCameraMoveStartedListener#constants.