def __init__(self, signature_id=None, user_ref=None, location_ref=None, signature_ref=None, date_time_stamp=None):
        #: Unique ID for Signature
        """
        :param UserRef user_ref: :class:`UserRef` for :class:`User` signing Data
        :param LocationRef location_ref: :class:`LocationRef` for :class:`Location` of signing
        :param SignatureRef signature_ref: :class:`SignatureRef` for :class:`SignatureDef` providing signature meaning
        :param date_time_stamp: :class:`DateTimeStamp` for the time of Signature
        """
        self._id = None
        if signature_id:
            self.signature_id = signature_id
        self.user_ref = user_ref
        self.location_ref = location_ref
        self.signature_ref = signature_ref
        self.date_time_stamp = date_time_stamp
def __init__ ( self , signature_id = None , user_ref = None , location_ref = None , signature_ref = None , date_time_stamp = None ) : self . _id = None if signature_id : self . signature_id = signature_id self . user_ref = user_ref self . location_ref = location_ref self . signature_ref = signature_ref self . date_time_stamp = date_time_stamp
:param UserRef user_ref: :class:`UserRef` for :class:`User` signing Data
        :param LocationRef location_ref: :class:`LocationRef` for :class:`Location` of signing
        :param SignatureRef signature_ref: :class:`SignatureRef` for :class:`SignatureDef` providing signature meaning
        :param date_time_stamp: :class:`DateTimeStamp` for the time of Signature