public static final Function<Long,Boolean> isNull() {
        return (Function<Long,Boolean>)((Function)FnObject.isNull());
    }
public static final Function < Long , Boolean > isNull ( ) { return ( Function < Long , Boolean > ) ( ( Function ) FnObject . isNull ( ) ) ; }
<p>
Determines whether the target object is null or not.
</p>

@return true if the target object is null, false if not.