GuzzleHttp\Tests\Psr7\UriTest::testImmutability PHP Method

    public function testImmutability()
    {
        $uri = new Uri();
        $this->assertNotSame($uri, $uri->withScheme('https'));
        $this->assertNotSame($uri, $uri->withUserInfo('user', 'pass'));
        $this->assertNotSame($uri, $uri->withHost('example.com'));
        $this->assertNotSame($uri, $uri->withPort(8080));
        $this->assertNotSame($uri, $uri->withPath('/path/123'));
        $this->assertNotSame($uri, $uri->withQuery('q=abc'));
        $this->assertNotSame($uri, $uri->withFragment('test'));
    }