function ListStringItem::exists

Checks for existing keys for allowed values.

File

core/modules/options/src/Plugin/Field/FieldType/ListStringItem.php, line 134

Class

ListStringItem

Plugin implementation of the 'list_string' field type.

Namespace

Code

public static function exists() : bool {
    // Without access to the current form state, we cannot know if a given key
    // is in use. Return FALSE in all cases.
    return FALSE;
}