Zend\Code\Generator\ParameterGenerator::getType PHP Method

    public function getType()
    {
        return $this->type ? (string) $this->type : null;
    }

 public function testTypeGetterAndSetterPersistValue()
 {
     $parameterGenerator = new ParameterGenerator();
     $parameterGenerator->setType('Foo');
     $this->assertEquals('Foo', $parameterGenerator->getType());
 }