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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fork(self, server_address: str = None, *, namespace: str = None) -> "State": r""" "Forks" this State object. Takes the same args as the :py:class:`State` constructor, except that they automatically default to the values provided during the creation of this State object. If no args are provided to this function, then it shall create a new :py:class:`State` object that follows the exact same semantics as this one. This is preferred over ``copy()``\ -ing a :py:class:`State` object. Useful when one needs to access 2 or more namespaces from the same code. """

        if server_address is None:
            server_address = self.server_address
        if namespace is None:
            namespace = self.namespace

        return self.__class__(server_address, namespace=namespace)