CustomBadgeTable::getStringOrArrayValidator

static function getStringOrArrayValidator(): Closure
{
	return static fn() => [
		static function ($value, $primary, $row, $field) {
			if (is_string($value) || is_array($value))
			{
				return true;
			}

			return $field . ' must be a string or an array';
		}
	];
}