/**
* Magic "__unset" method
*
* @internal
* @param string $key The key to unset
* @throws ReadOnlyException External modification is not allowed
* @return void
*/
public function __unset($key)
{
throw ReadOnlyException::forAttribute($key);
}
/**
* Remove the item at the given offset
*
* @internal
* @param mixed $offset The offset to unset
* @throws ReadOnlyException External modification is not allowed
* @return void
*/
public function offsetUnset($offset)
{
throw ReadOnlyException::forAttribute($offset);
}