public function getValues()
    {
        $values = array();
        /** @var Input $input */
        foreach ($this->_inputs as $name => $input) {
            if (strlen($name) > 0) {
                $values[$name] = call_user_func_array(
                    [$input, 'getValue'],
                    [$name]
                );
            }
        }
        return $values;
    }