@timestamp_signup.setter
def timestamp_signup(self, timestamp_signup):
    'Sets the timestamp_signup of this AddListMembers1.\n\n        The date and time the subscriber signed up for the list in ISO 8601 format.  # noqa: E501\n\n        :param timestamp_signup: The timestamp_signup of this AddListMembers1.  # noqa: E501\n        :type: datetime\n        '
    self._timestamp_signup = timestamp_signup
Sets the timestamp_signup of this AddListMembers1.

The date and time the subscriber signed up for the list in ISO 8601 format.  # noqa: E501

:param timestamp_signup: The timestamp_signup of this AddListMembers1.  # noqa: E501
:type: datetime
@timestamp_signup.setter
def timestamp_signup(self, timestamp_signup):
    'Sets the timestamp_signup of this AddListMembers1.\n\n        The date and time the subscriber signed up for the list in ISO 8601 format.  # noqa: E501\n\n        :param timestamp_signup: The timestamp_signup of this AddListMembers1.  # noqa: E501\n        :type: datetime\n        '
    self._timestamp_signup = timestamp_signup