Nelmio\Alice\Definition\Value\ListValue::getValue PHP Метод

    public function getValue() : array
    {
        return deep_clone($this->values);
    }

 public function testIsImmutable()
 {
     $value = new ListValue([$arg0 = new \stdClass()]);
     // Mutate injected value
     $arg0->foo = 'bar';
     // Mutate returned value
     $value->getValue()[0]->foo = 'baz';
     $this->assertEquals([new \stdClass()], $value->getValue());
 }