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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fetch_entity_cls_from_registry(entity):
 """Util Method to fetch an Entity class from an entity's name"""

    # Defensive check to ensure we only process if `to_cls` is a string
    if isinstance(entity, str):
        try:
            return repo_factory.get_entity(entity)
        except AssertionError:
            # Entity has not been registered (yet)
            # FIXME print a helpful debug message
            raise
    else:
        return entity