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