<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def skip_storing_namespace(self, namespace: Optional[str]) -> bool: """Check if the namespace should be skipped. :param namespace: The keyword of the namespace to check. """

        return (
            namespace is not None and
            namespace in self.namespace_url and
            self.namespace_url[namespace] in self.uncached_namespaces
        )