@abc.abstractmethod
def find(self, qname: str, condition: Callable=return_true) -> Optional[Class]:
    'Search by qualified name for a specific class with an optional\n        condition callable.'
Search by qualified name for a specific class with an optional
condition callable.
@abc.abstractmethod
def find(self, qname: str, condition: Callable=return_true) -> Optional[Class]:
    'Search by qualified name for a specific class with an optional\n        condition callable.'