code: def _update_limits_from_api(self):
          
          logger.debug("Updating limits for Lambda from the AWS API")
          if len(self.limits) == 2:
              return
          self.connect()
          lims = self.conn.get_account_settings()['AccountLimit']
          self.limits['Total Code Size (MiB)']._set_api_limit(
              (lims['TotalCodeSize']/1048576))
          self.limits['Code Size Unzipped (MiB) per Function']._set_api_limit(
              (lims['CodeSizeUnzipped']/1048576))
          self.limits['Unreserved Concurrent Executions']._set_api_limit(
              lims['UnreservedConcurrentExecutions'])
          self.limits['Concurrent Executions']._set_api_limit(
              lims['ConcurrentExecutions'])
          self.limits['Code Size Zipped (MiB) per Function']._set_api_limit(
              (lims['CodeSizeZipped']/1048576))
docs: Query Lambda's DescribeLimits API action, and update limits
          with the quotas returned. Updates ``self.limits``.