/**
* @param string $email
* @return null
*/
public function setEmail($email)
{
if (!isset($this->loadedFields['email'])) {
$this->loadProperties();
}
$oldValue = null;
if (array_key_exists('email', $this->loadedValues)) {
$oldValue = $this->loadedValues['email'];
}
if ($oldValue === $email) {
$this->email = $email;
return;
}
return parent::setEmail($email);
}