public function testValues()
{
$this->isValueString(PhpParameter::create()->setValue('hello'));
$this->isValueInteger(PhpParameter::create()->setValue(2));
$this->isValueFloat(PhpParameter::create()->setValue(0.2));
$this->isValueBool(PhpParameter::create()->setValue(false));
$this->isValueNull(PhpParameter::create()->setValue(null));
}