pub unsafe extern "C" fn ACameraManager_registerAvailabilityCallback(
manager: *mut ACameraManager,
callback: *const ACameraManager_AvailabilityCallbacks
) -> camera_status_t
pub unsafe extern "C" fn ACameraManager_registerAvailabilityCallback(
manager: *mut ACameraManager,
callback: *const ACameraManager_AvailabilityCallbacks
) -> camera_status_t