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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 assignees(self, assignee=None, resource_id=None):
 """Add an assignee to a Task GET: /v2/tasks/{uniqueId}/assignees GET: /v2/tasks/{uniqueId}/assignees/{assigneeId} POST: /v2/tasks/{uniqueId}/assignees/{assigneeId} DELETE: /v2/tasks/{uniqueId}/assignees/{assigneeId} Args: assignee (Optional [string]):
 The assignee name. resource_id (Optional [string]):
 The task ID. """

        if resource_id is not None:
            self.resource_id(resource_id)
        self._request_uri = '{}/assignees'.format(self._request_uri)
        if assignee is not None:
            self._request_uri = '{}/{}'.format(self._request_uri, assignee)