code: def get_time_estimate(self, start_latitude, start_longitude, customer_uuid=None, product_id=None):
          
  
          endpoint = 'estimates/time'
          query_parameters = {
              'start_latitude': start_latitude,
              'start_longitude': start_longitude
          }
  
          if customer_uuid is not None:
              query_parameters['customer_uuid'] = customer_uuid
          elif product_id is not None:
              query_parameters['product_id'] = product_id
          elif customer_uuid is not None and product_id is not None:
              query_parameters['customer_uuid'] = customer_uuid
              query_parameters['product_id'] = product_id
  
          return self.get_json(endpoint, 'GET', query_parameters, None, None)
docs: Get the ETA for Uber products.
          :param start_latitude: Starting latitude.
          :param start_longitude: Starting longitude.
          :param customer_uuid: (Optional) Customer unique ID.
          :param product_id: (Optional) If ETA is needed only for a specific product type.
          :return: JSON