url.php
public function addRequestParameter($key, $value)
    {
        $this->raw = false;
        $this->request->add($key, $value);
    }
public function addRequestParameter($key, $value)
    {
        $this->raw = false;
        $this->request->add($key, $value);
    }
Adds an additional parameter to the request.

@param string $key            Name of parameter.
@param string $value          Value as string.