Documentation issue IN Rule #104

$validation = $validator->validate($data, [
    'enabled' => [
        'required', 
        $validator('in', [true, 1])->strict()
    ]
]);

/** @var In $boolValidator */
$boolValidator = $validator('in', [true, 1]);
$boolValidator->strict();

$validation = $validator->validate($data, [
    'enabled' => [ 'required', $boolValidator]
]);