src/BoomCMS/Database/Models/Page.php
public function getVisibleTo()
    {
        return empty($this->{self::ATTR_VISIBLE_TO}) ? null : new DateTime('@'.$this->{self::ATTR_VISIBLE_TO});
    }
public function getVisibleTo()
    {
        return empty($this->{self::ATTR_VISIBLE_TO}) ? null : new DateTime('@'.$this->{self::ATTR_VISIBLE_TO});
    }
public function getVisibleTo ( ) { return empty ( $ this -> { self :: ATTR_VISIBLE_TO } ) ? null : new DateTime ( '@' . $ this -> { self :: ATTR_VISIBLE_TO } ) ; }
Returns the visible to date, or null if none is set.

@return null|DateTime
Returns the visible to date or null if none is set .