* will not prevent submission of forms submitted with the {@link Ext.form.action.Submit#clientValidation}
* option set.</p>
* @param {String/Array} errors The error message(s) for the field.
+ * @method
*/
markInvalid: Ext.emptyFn,
* return <code>true</code> if the value does not <i>pass</i> validation. So simply clearing a field's errors
* will not necessarily allow submission of forms submitted with the {@link Ext.form.action.Submit#clientValidation}
* option set.</p>
+ * @method
*/
clearInvalid: Ext.emptyFn