function hasNotification()
	{
		if (!is_null( $this->attribute( 'expirationnotification' ) ) &&
			( $this->attribute( 'expirationnotification' ) != self::NOT_DEFINED ) &&
			( $this->attribute( 'expirationnotification' ) != '' ) )
			return true;
		else
			return false;
	}
function hasNotification()
	{
		if (!is_null( $this->attribute( 'expirationnotification' ) ) &&
			( $this->attribute( 'expirationnotification' ) != self::NOT_DEFINED ) &&
			( $this->attribute( 'expirationnotification' ) != '' ) )
			return true;
		else
			return false;
	}
function hasNotification ( ) { if ( ! is_null ( $ this -> attribute ( 'expirationnotification' ) ) && ( $ this -> attribute ( 'expirationnotification' ) != self :: NOT_DEFINED ) && ( $ this -> attribute ( 'expirationnotification' ) != '' ) ) return true ; else return false ; }
Check if expiration notification is defined or not

@return bool
Check if expiration notification is defined or not