code: def get_chain(self, use_login=False, use_fork=False):
          
          self._connect()
          if use_login:
              return self.login_context.default_call_chain
          # See FORK_SUPPORTED comments in target.py.
          if use_fork and self.init_child_result['fork_context'] is not None:
              return self.init_child_result['fork_context'].default_call_chain
          return self.chain
docs: Return the :class:`mitogen.parent.CallChain` to use for executing
          function calls.
  
          :param bool use_login:
              If :data:`True`, always return the chain for the login account
              rather than any active become user.
          :param bool use_fork:
              If :data:`True`, return the chain for the fork parent.
          :returns mitogen.parent.CallChain: