src/Skeetr/Client/HTTP/Request.php
public function getHeader($header, $into_class = null)
    {
        $header = parent::getHeader($header);

        if (!is_array($header)) {
            return [$header];
        }

        return $header;
    }
public function getHeader($header, $into_class = null)
    {
        $header = parent::getHeader($header);

        if (!is_array($header)) {
            return [$header];
        }

        return $header;
    }
Get a header by name

@param  string $header
@return string