code: def get_page(self, start_element=0, num_elements=None):
          
          if num_elements is None:
              num_elements = self.batch_size
          specs = self.specs.copy()
          specs.update(start_element=start_element, num_elements=num_elements)
          return self.client.get(self.service_name, **specs)
docs: Get a page (100 elements) starting from `start_element`