in wadebug/wa_actions/base.py [0:0]
def register_class(target_class):
if target_class.user_facing_name in user_facing_registry:
raise WAActionAlreadyRegisteredError(
"{} already in use by class {}. "
"Choose another user-facing name".format(
target_class.user_facing_name,
user_facing_registry[target_class.user_facing_name].__name__,
)
)
registry[target_class.__name__] = target_class
user_facing_registry[target_class.user_facing_name] = target_class