public function find($key, $default = null) {
        $key = $this->formatKey($key);
        $headers = array_get($this->headers, $key, $default);

        if (is_array($headers)) {
            $headers = array_pop($headers);
        }

        return $headers;
    }
public function find($key, $default = null) {
        $key = $this->formatKey($key);
        $headers = array_get($this->headers, $key, $default);

        if (is_array($headers)) {
            $headers = array_pop($headers);
        }

        return $headers;
    }
public function find ( $ key , $ default = null ) { $ key = $ this -> formatKey ( $ key ) ; $ headers = array_get ( $ this -> headers , $ key , $ default ) ; if ( is_array ( $ headers ) ) { $ headers = array_pop ( $ headers ) ; } return $ headers ; }
Find the last added header.

@param $key
@param null $default

@return string
Find the last added header .