public function compile(\Twig_Compiler $compiler)
{
$writeErrorMessage = 'echo ' . "\$context['form_{$this->form}']->getField('{$this->field}')->getErrors() " . "? '<span class=\"formError\">' " . ". \$context['form_{$this->form}']->getField('{$this->field}')->getErrors() " . ". '</span>' : '';";
$compiler->addDebugInfo($this)->write($writeErrorMessage);
}