docs: def create(self, *args, **kwargs):
          """
          Create a deal
  
          Create a new deal
  
          :calls: ``post /deals``
          :param tuple *args: (optional) Single object representing Deal resource.
          :param dict **kwargs: (optional) Deal attributes.
          :return: Dictionary that support attriubte-style access and represents newely created Deal resource.
          :rtype: dict
          """
  
          if not args and not kwargs:
              raise Exception('attributes for Deal are missing')
  
          attributes = args[0] if args else kwargs
          attributes = dict((k, v) for k, v in attributes.iteritems() if k in self.OPTS_KEYS_TO_PERSIST)
  
          if "value" in attributes:
              attributes["value"] = Coercion.to_string(attributes["value"])
          _, _, deal = self.http_client.post("/deals", body=attributes)
          deal["value"] = Coercion.to_decimal(deal["value"])
          return deal