@property
    def sent_direct_messages(self):
        return bind_api(
            api=self,
            path='/direct_messages/sent.json',
            payload_type='direct_message', payload_list=True,
            allowed_param=['since_id', 'max_id', 'count', 'page', 'full_text'],
            require_auth=True
        )
:reference: https://dev.twitter.com/rest/reference/get/direct_messages/sent
dataset/ETHPy150Open tweepy/tweepy/tweepy/api.py/API.sent_direct_messages