The signature is calculated over locked and exclude fields as well as a hash
of $fields. The $fields data will not become part of the final form signature
string. The $fields hash is not signed itself as the hash will become part
of the form signature string which is already signed.
protected static function _compile(array $fields, array $locked, array $excluded)
{
$result = parent::_compile($fields, $locked, $excluded);
static::$compile[] = array('in' => compact('fields', 'locked', 'excluded'), 'out' => $result);
return $result;
}
