src/Form/Form.php
public function setDescription($description, $params = null)
    {
        $this->options['description'] = $description;
        $this->options['description_params'] = $params;
        return $this;
    }
public function setDescription($description, $params = null)
    {
        $this->options['description'] = $description;
        $this->options['description_params'] = $params;
        return $this;
    }
@param string $description

@return $this