+</span> * Clears the active error message(s).
+ *
+ * Note that this only clears the error message element's text and attributes, you'll have
+ * to call doComponentLayout to actually update the field's layout to match. If the field extends
+ * {@link Ext.form.field.Base} you should call {@link Ext.form.field.Base#clearInvalid clearInvalid} instead.