BirdBathMixin.java

@Mixin(BirdBath.class)
public class BirdBathMixin extends CauldronBlock {
	public BirdBathMixin(Settings settings) {
		super(settings);
	}

	@Inject(method = "<init>", at = @At("TAIL"))
	private void setDefaultState(CallbackInfo ci) {
		this.setDefaultState(this.getDefaultState().with(Tweaks.INFINITE, false));
	}

	@Inject(method = "appendProperties", at = @At("TAIL"))
	private void addInfiniteState(StateManager.Builder<Block, BlockState> builder, CallbackInfo ci) {
		builder.add(Tweaks.INFINITE);
	}
}

VolatileMixinPlugin.java

public class VolatileMixinPlugin implements IMixinConfigPlugin {
    @Override
    public void onLoad(String mixinPackage) {
    }

    @Override
    public String getRefMapperConfig() {
        return null;
    }

    @Override
    public boolean shouldApplyMixin(String targetClassName, String mixinClassName) {
        if (mixinClassName.equals("dev.hephaestus.tweaks.mixin.compat.BirdBathMixin")
            && !FabricLoader.getInstance().isModLoaded("decorative")) {
            return false;
        }

        boolean isDevelopmentEnvironment = FabricLoader.getInstance().isDevelopmentEnvironment();
        if (mixinClassName.contains("mixin.dev") && !isDevelopmentEnvironment)
            return false;
        else return !mixinClassName.contains("mixin.prod") || !isDevelopmentEnvironment;
    }

    @Override
    public void acceptTargets(Set<String> myTargets, Set<String> otherTargets) {

    }

    @Override
    public List<String> getMixins() {
        return null;
    }

    @Override
    public void preApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {

    }

    @Override
    public void postApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {

    }
}