docs: function (event) {
              this.data.showSource = !this.data.showSource;
              if (this.data.showSource) {
                  this.data.initialSource = true;
                  var filePath = this.data.templateCtxt.tplClasspath.replace(/\./g, "/") + ".tpl";
                  this.data.source = this.moduleCtrl.getSource(filePath).value;
              }
              this.$refresh();
          }