public function add($key, $value)
    {
        $header = $this->get($key, true);
        if (is_array($value)) {
            $header = array_merge($header, $value);
        } else {
            $header[] = $value;
        }
        parent::set($this->normalizeKey($key), $header);
    }
public function add($key, $value)
    {
        $header = $this->get($key, true);
        if (is_array($value)) {
            $header = array_merge($header, $value);
        } else {
            $header[] = $value;
        }
        parent::set($this->normalizeKey($key), $header);
    }
public function add ( $ key , $ value ) { $ header = $ this -> get ( $ key , true ) ; if ( is_array ( $ value ) ) { $ header = array_merge ( $ header , $ value ) ; } else { $ header [ ] = $ value ; } parent :: set ( $ this -> normalizeKey ( $ key ) , $ header ) ; }
Add data to key

@param string $key   The data key
@param mixed  $value The data value
@api
Add data to key