def get_network_by_name_version(self, name: str, version: str) -> Optional[Network]:
        """Load the network with the given name and version if it exists."""
        name_version_filter = and_(Network.name == name, Network.version == version)
        network = self.session.query(Network).filter(name_version_filter).one_or_none()
        return network
Load the network with the given name and version if it exists.