(self)
return self._impl_class()
Returns the class of the underlying impl. This should return the same thing
        as self.impl.__class__, but can be more efficient.
Returns the class of the underlying impl. This should return the same thing
        as self.impl.__class__, but can be more efficient.
Returns the class of the underlying impl . This should return the same thing as self . impl . __class__ but can be more efficient .
def impl_class(self) -> type:
        """Returns the class of the underlying impl. This should return the same thing
        as self.impl.__class__, but can be more efficient.
        """
        return self._impl_class()
def impl_class ( self ) -> type : return self . _impl_class ( )