get numItems() {
            if (this._virtual)
                return this._numItems;
            else
                return this._children.length;
        }
/**
         * Set the list item count.
         * If the list instanceof not virtual, specified number of items will be created.
         * If the list instanceof virtual, only items in view will be created.
         */
Set the list item count.
If the list instanceof not virtual, specified number of items will be created.
If the list instanceof virtual, only items in view will be created.
Set the list item count . If the list instanceof not virtual specified number of items will be created . If the list instanceof virtual only items in view will be created .
get numItems() {
            if (this._virtual)
                return this._numItems;
            else
                return this._children.length;
        }
get numItems ( ) { if ( this . _virtual ) return this . _numItems ; else return this . _children . length ; }
Set the list item count.
Set the list item count .