code: function(interaction) {
          const action = ngeoQueryKeyboard.action;
          const extent = interaction.getGeometry().getExtent();
          const limit = scope.$eval(attrs['ngeoBboxQueryLimit']);
          ngeoMapQuerent.issue({
            action,
            extent,
            limit,
            map
          });
        }
docs: Called when a bbox is drawn while this controller is active. Issue
  a request to the query service using the extent that was drawn.
  @param {!olInteractionDragBox} interaction Drag box interaction