public function validate($validationGroup = null)
{
Prado::trace("Page validate()", 'Prado\\Web\\UI\\TPage');
$this->_validated = true;
if ($this->_validators && $this->_validators->getCount()) {
if ($validationGroup === null) {
foreach ($this->_validators as $validator) {
$validator->validate();
}
} else {
foreach ($this->_validators as $validator) {
if ($validator->getValidationGroup() === $validationGroup) {
$validator->validate();
}
}
}
}
}