public function testEars()
{
$snippet = $this->snippetFromMethod(Landmarks::class, 'ears');
$snippet->addLocal('landmarks', $this->landmarks);
$res = $snippet->invoke();
$this->assertEquals($this->positionAggregate(['left' => 'LEFT_EAR_TRAGION', 'right' => 'RIGHT_EAR_TRAGION']), $res->output());
}