public function clearExpiry($write = true)
    {
        $this->ExpireAtDate = null;

        if ($write) {
            $this->write();
        }

        return $this;
    }
public function clearExpiry($write = true)
    {
        $this->ExpireAtDate = null;

        if ($write) {
            $this->write();
        }

        return $this;
    }
public function clearExpiry ( $ write = true ) { $ this -> ExpireAtDate = null ; if ( $ write ) { $ this -> write ( ) ; } return $ this ; }
Clears any previously set expiry.

@param bool $write

@return DMSDocument
Clears any previously set expiry .