Optional arguments for peripheral methods

[Mathilde411]

Hello again ! I want to create a method for a peripheral that has a nullable parameter.
I tried that:

@LuaFunction
public final void write(ByteBuffer bytes, @Nullable String label) throws LuaException {
          byte[] data = Util.getByteBufferArray(bytes);
        if (data.length > Config.MAX_MAG_CARD_DATA)
            throw new LuaException("You can't put more than " + Config.MAX_MAG_CARD_DATA + " characters in a mag card.");
        getTile().writeCard(data, label);
    }

    @LuaFunction
    public final void write(ByteBuffer bytes) throws LuaException {
        this.write(bytes, null);
    }

But I always get bad argument #2 (string excpected, got nil) when using the method ingame
So, is there a way to have optional arguments to peripheral methods ?

[SquidDev]

@Nullable isn't available at runtime I don't believe, and so we can't check for it. Optional<String> should work.

[Mathilde411]

That's weird
IntelliJ warns me that Optional should be avoided as it has an unpredictable behavior.

Anyways, It's working like a charm !
Thanks ^^

[SquidDev]

Yeah, it's not fantastic, but I'm not convinced it's the anti-pattern IntelliJ warns it is. Either way, it's pretty much the only decent option available, so ¯\_(ツ)_/¯.