src/sap.m/src/sap/m/TileContainer.js
function handleAriaPositionInSet(iStartIndex, iEndIndex, aVisibleTiles) {
		var i,
			oTile = null;

		aVisibleTiles = aVisibleTiles || this._getVisibleTiles();

		for (i = iStartIndex; i < iEndIndex; i++) {
			oTile = aVisibleTiles[i];
			if (oTile) {
				oTile.$().attr('aria-posinset', this._indexOfVisibleTile(oTile, aVisibleTiles) + 1);
			}
		}
	}
function handleAriaPositionInSet(iStartIndex, iEndIndex, aVisibleTiles) {
		var i,
			oTile = null;

		aVisibleTiles = aVisibleTiles || this._getVisibleTiles();

		for (i = iStartIndex; i < iEndIndex; i++) {
			oTile = aVisibleTiles[i];
			if (oTile) {
				oTile.$().attr('aria-posinset', this._indexOfVisibleTile(oTile, aVisibleTiles) + 1);
			}
		}
	}
function handleAriaPositionInSet ( iStartIndex , iEndIndex , aVisibleTiles ) { var i , oTile = null ; aVisibleTiles = aVisibleTiles || this . _getVisibleTiles ( ) ; for ( i = iStartIndex ; i < iEndIndex ; i ++ ) { oTile = aVisibleTiles [ i ] ; if ( oTile ) { oTile . $ ( ) . attr ( 'aria-posinset' , this . _indexOfVisibleTile ( oTile , aVisibleTiles ) + 1 ) ; } } }
Handles the WAI ARIA property aria-posinset after a change in the TileContainer.
@param {int} iStartIndex The index of the Tile to start with
@param {int} iEndIndex The index of the Tile to complete with
@param {sap.m.Tile[]} [aVisibleTiles] optional list of visible tiles in order to avoid filtering them again.
@private
Handles the WAI ARIA property aria - posinset after a change in the TileContainer .