code: function( mergeThen )
  		{
  			var docFrag = new CKEDITOR.dom.documentFragment( this.document );
  
  			if ( !this.collapsed )
  				execContentsAction( this, 1, docFrag, mergeThen );
  
  			return docFrag;
  		}
docs: The content nodes of the range are cloned and added to a document fragment,
  meanwhile they're removed permanently from the DOM tree.
  @param {Boolean} [mergeThen] Merge any splitted elements result in DOM true due to partial selection.