Pinq\Analysis\IType::getIdentifier PHP Method

    public function getIdentifier();

 protected function assertEqualTypes(IType $expected, IType $actual, $message = '')
 {
     $this->assertSame($expected->getIdentifier(), $actual->getIdentifier(), $message);
     $this->assertTrue($expected->isEqualTo($actual), $message);
     $this->assertTrue($actual->isEqualTo($expected), $message);
     $this->assertSame($expected, $actual, $message);
 }