Provides helpers to operate on forms.
| Name | Modifiers | Type | Description |
|---|---|---|---|
| FormHelper::processStatesArray | protected static | function | Helper function for self::rewriteStatesSelector(). |
| FormHelper::rewriteStatesSelector | public static | function | Rewrite #states selectors. |
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Form!FormHelper.php/class/FormHelper/8.1.x