private function post($url, array $query = array())
    {
        return $this->browser->post($url, array(), $this->prepareQueryString($query));
    }
private function post($url, array $query = array())
    {
        return $this->browser->post($url, array(), $this->prepareQueryString($query));
    }
private function post ( $ url , array $ query = array ( ) ) { return $ this -> browser -> post ( $ url , array ( ) , $ this -> prepareQueryString ( $ query ) ) ; }
Send POST request to specified URL.

@param string $url   URL
@param array  $query POST query parameters

@return Buzz\Message\Response response
Send POST request to specified URL .