code: def get_namespace(self, key):
          
          namespace = self.shared_namespaces.get(key)
          if namespace:
              return namespace
          ns = SharedNamespace(self.manager)
          self.shared_namespaces[key] = ns
          return ns
docs: Returns a :class:`~bang.util.SharedNamespace` for the given
          :attr:`key`.  These are used by
          :class:`~bang.deployers.deployer.Deployer` objects of the same
          ``deployer_class`` to coordinate control over multiple deployed
          instances of like resources.  E.g. With 5 clones of an application
          server, 5 :class:`~bang.deployers.deployer.Deployer` objects in
          separate, concurrent processes will use the same shared namespace to
          ensure that each object/process controls a distinct server.
  
          :param str key:  Unique ID for the
              namespace.  :class:`~bang.deployers.deployer.Deployer` objects that
              call :meth:`get_namespace` with the same :attr:`key` will receive
              the same :class:`~bang.util.SharedNamespace` object.