code: function() {
  				var changes = this._.attrChanges, orgVal;
  				for ( var attr in changes ) {
  					if ( changes.hasOwnProperty( attr ) ) {
  						orgVal = changes[ attr ];
  						// Restore original attribute.
  						orgVal !== null ? this.setAttribute( attr, orgVal ) : this.removeAttribute( attr );
  					}
  				}
  			}
docs: Restore all attribution changes made by {@link #changeAttr }.