src/view/MainViewManager.js
function getWorkingSetSize(paneId) {
        var result = 0;
        _forEachPaneOrPanes(paneId, function (pane) {
            result += pane.getViewListSize();
        });
        return result;
    }
function getWorkingSetSize(paneId) {
        var result = 0;
        _forEachPaneOrPanes(paneId, function (pane) {
            result += pane.getViewListSize();
        });
        return result;
    }
function getWorkingSetSize ( paneId ) { var result = 0 ; _forEachPaneOrPanes ( paneId , function ( pane ) { result += pane . getViewListSize ( ) ; } ) ; return result ; }
Retrieves the size of the selected pane's view list
@param {!string} paneId - id of the pane in which to get the workingset size.
Can use `ALL_PANES` or `ACTIVE_PANE`
@return {!number} the number of items in the specified pane
Retrieves the size of the selected pane s view list