dist/es5/dev/widget/Constructor.js
function loadCss(url) {
                if (this.context._cssReady.indexOf(url) === -1) {
                    this.context._cssReady.push(url);
                    var linkRef = document.createElement("link");
                    linkRef.setAttribute("rel", "stylesheet");
                    linkRef.setAttribute("type", "text/css");
                    linkRef.setAttribute("href", url);
                    if (typeof linkRef != "undefined") {
                        document.getElementsByTagName("head")[0].appendChild(linkRef);
                    }
                }
            }
function loadCss(url) {
                if (this.context._cssReady.indexOf(url) === -1) {
                    this.context._cssReady.push(url);
                    var linkRef = document.createElement("link");
                    linkRef.setAttribute("rel", "stylesheet");
                    linkRef.setAttribute("type", "text/css");
                    linkRef.setAttribute("href", url);
                    if (typeof linkRef != "undefined") {
                        document.getElementsByTagName("head")[0].appendChild(linkRef);
                    }
                }
            }
function loadCss ( url ) { if ( this . context . _cssReady . indexOf ( url ) === - 1 ) { this . context . _cssReady . push ( url ) ; var linkRef = document . createElement ( "link" ) ; linkRef . setAttribute ( "rel" , "stylesheet" ) ; linkRef . setAttribute ( "type" , "text/css" ) ; linkRef . setAttribute ( "href" , url ) ; if ( typeof linkRef != "undefined" ) { document . getElementsByTagName ( "head" ) [ 0 ] . appendChild ( linkRef ) ; } } }
Load external css style for third party modules.  @method loadCss @param {string} url
Load external css style for third party modules .