src/aria/core/DownloadMgr.js
function (logicalPath) {
            var itm = this._cache.getItem("files", logicalPath, false);
            if (itm && itm.status == this._cache.STATUS_AVAILABLE) {
                return itm.value;
            }
            return null;
        }
function (logicalPath) {
            var itm = this._cache.getItem("files", logicalPath, false);
            if (itm && itm.status == this._cache.STATUS_AVAILABLE) {
                return itm.value;
            }
            return null;
        }
function ( logicalPath ) { var itm = this . _cache . getItem ( "files" , logicalPath , false ) ; if ( itm && itm . status == this . _cache . STATUS_AVAILABLE ) { return itm . value ; } return null ; }
Get the file content from its logical path Return null if file is in error
@param {String} logicalPath
@return {String}
Get the file content from its logical path Return null if file is in error