public function get($id)
    {
        if (isset($this->forms[$id])) {
            return $this->forms[$id];
        }

        throw new FormalException(
            "Unknown form field '$id'. Available fields are: " . implode(', ', array_keys($this->forms))
        );
    }
public function get($id)
    {
        if (isset($this->forms[$id])) {
            return $this->forms[$id];
        }

        throw new FormalException(
            "Unknown form field '$id'. Available fields are: " . implode(', ', array_keys($this->forms))
        );
    }
@param string $id

@return Form
@throws FormalException