public function isEqualTo(IType $type);
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); }