public function addValue(string $key, string $value) : void
    {
        $this->map[$key] = $value;
    }
public function addValue(string $key, string $value) : void
    {
        $this->map[$key] = $value;
    }
public function addValue ( string $ key , string $ value ) : void { $ this -> map [ $ key ] = $ value ; }
Add a new value to the map

@param string $key
@param string $value
Add a new value to the map