code: def all(self, page=None, per_page=None, include_totals=False, extra_params=None):
          
          params = extra_params or {}
          params.update({
              'page': page,
              'per_page': per_page,
              'include_totals': str(include_totals).lower()
          })
  
          return self.client.get(self._url(), params=params)
docs: Retrieves all grants.
  
          Args:
              page (int, optional): The result's page number (zero based).
  
              per_page (int, optional): The amount of entries per page.
  
              include_totals (bool, optional): True if the query summary is
                  to be included in the result, False otherwise.
  
             extra_params (dictionary, optional): The extra parameters to add to
               the request. The page, per_page, and include_totals values
               specified as parameters take precedence over the ones defined here.
              
          See: https://auth0.com/docs/api/management/v2#!/Grants/get_grants