docs: def create_pos(self, name, pos_type,
                     pos_id, location=None):
          """Create POS resource
  
          Arguments:
              name:
                  Human-readable name of the POS, used for displaying payment
                  request origin to end user
              pos_type:
                  POS type
              location:
                  Merchant location
              pos_id:
                  The ID of the POS that is to be created. Has to be unique for
                  the merchant
          """
          arguments = {'name': name,
                       'type': pos_type,
                       'id': pos_id,
                       'location': location}
          return self.do_req('POST', self.merchant_api_base_url + '/pos/', arguments).json()