src/Headers/Headers.php
public function get(string $name): Header
    {
        if (!$this->has($name)) {
            throw new HeaderNotFound;
        }

        return $this->headers->get((string) (new Str($name))->toLower());
    }
public function get(string $name): Header
    {
        if (!$this->has($name)) {
            throw new HeaderNotFound;
        }

        return $this->headers->get((string) (new Str($name))->toLower());
    }
{@inheritdoc}