public function testPathElement()
{
$key = new Key('foo');
$this->assertEmpty($key->keyObject()['path']);
$key->pathElement('foo', 'bar');
$this->assertEquals(1, count($key->keyObject()['path']));
$this->assertEquals(['kind' => 'foo', 'name' => 'bar'], $key->keyObject()['path'][0]);
}