[1.12.2] Correct way to use/call ModdedBiomeDecorator?

Hello there,

Just curious, what is the correct way to call and override and use a moddedBiomeDecorator functions in a custom biome?

Like I've read people saying to override: CreateBiomeDecorator or getModdedBiomeDecorator but how do I call the variables and functions in my biome file? all I can seem to do is call the original decorator stuff.

This example is me, override the getModdedBiomeDecorator but I can't seem to figure out how to call my waterGrassPerChunks generator functions from my ExplorerDecorator.

	public BiomeCoralReef(BiomeProperties properties) {
		
		super(properties);
		topBlock = Blocks.SAND.getDefaultState();
		fillerBlock = Blocks.SAND.getDefaultState();
		this.decorator.clayPerChunk = 0;
		this.decorator.sandPatchesPerChunk = 10;
		this.decorator.gravelPatchesPerChunk = 0;
		this.decorator.waterGrassPerChunk = 0; //This calls an error because well it doesn't exist in the original biome decorator
		this.getModdedBiomeDecorator(decorator).waterGrassPerChunk = 0; //Once again, doesn't work
		getModdedBiomeDecorator(decorator).waterGrassPerChunk = 0; //How do I call the modded biome decorate correctly?

	}
	
	@Override
	public BiomeDecorator getModdedBiomeDecorator(BiomeDecorator original) {
		return new ExplorerDecorator();
	}

Now, this is why i'm asking how to do it correctly because this example below, works but i'm pretty much ignoring the entire getModdedBiomeDecorator/createBiomeDecorator functions and am not even overwriting them

    ExplorerDecorator explorerDecorator;
    
	public BiomeKelpForest(BiomeProperties properties) {
		
		super(properties);
		decorator = new ExplorerDecorator();
		explorerDecorator = (ExplorerDecorator)decorator;
		explorerDecorator.waterGrassPerChunk = 5;
	}

Like it works and all, so I could just keep on doing that but if there is a way to do it correctly through forge, i'd rather use it properly.

So any help or tips would be fantastic!