public/ckeditor/4.4dev/plugins/dialogui/plugin.js
function( label ) {
				var node = CKEDITOR.document.getById( this._.labelId );
				if ( node.getChildCount() < 1 )
				( new CKEDITOR.dom.text( label, CKEDITOR.document ) ).appendTo( node );
				else
					node.getChild( 0 ).$.nodeValue = label;
				return this;
			}
function( label ) {
				var node = CKEDITOR.document.getById( this._.labelId );
				if ( node.getChildCount() < 1 )
				( new CKEDITOR.dom.text( label, CKEDITOR.document ) ).appendTo( node );
				else
					node.getChild( 0 ).$.nodeValue = label;
				return this;
			}
function ( label ) { var node = CKEDITOR . document . getById ( this . _ . labelId ) ; if ( node . getChildCount ( ) < 1 ) ( new CKEDITOR . dom . text ( label , CKEDITOR . document ) ) . appendTo ( node ) ; else node . getChild ( 0 ) . $ . nodeValue = label ; return this ; }
Sets the label text of the element.

@param {String} label The new label text.
@returns {CKEDITOR.ui.dialog.labeledElement} The current labeled element.
Sets the label text of the element .