examples/plugins/css/index.lmd.js
function (e) {
                if (isNotLoaded) {
                    isNotLoaded = 0;
                    // register or cleanup
                    link.removeAttribute('id');

                    if (!e) {
                        sb.trigger('*:request-error', moduleName, module);
                    }
                    callback(e ? sb.register(moduleName, link) : head.removeChild(link) && sb.undefined); // e === undefined if error
                }
            }
function (e) {
                if (isNotLoaded) {
                    isNotLoaded = 0;
                    // register or cleanup
                    link.removeAttribute('id');

                    if (!e) {
                        sb.trigger('*:request-error', moduleName, module);
                    }
                    callback(e ? sb.register(moduleName, link) : head.removeChild(link) && sb.undefined); // e === undefined if error
                }
            }
Create stylesheet link