Return True if this rule can build with the values and method.

def buildable(self, values: Optional[dict]=None, method: Optional[str]=None) -> bool:
        """Return True if this rule can build with the values and method."""
        if method is not None and method not in self.methods:
            return False
        defaults_match = all(
            values[key] == self.defaults[key] for key in self.defaults if key in values  # noqa: S101, E501
        )
        return defaults_match and set(values.keys()) >= set(self._converters.keys())