Add View DataSource in SSJS

/**
 * Injects a view datasource on a page.
 * @param dbName - name of a database
 * @param viewName - name of a view
 * @param varName - name of a datasource
 * @return a new datasource (DominoViewData)
 */
function addViewDataSource(dbName: string, viewName: string, varName: string) {
    var v = new com.ibm.xsp.model.domino.DominoViewData();
    v.setDatabaseName(dbName);
    v.setViewName(viewName);
    v.setVar(varName);
    v.setComponent(getView());
    getView().addData(v);
    return v;
}