Custom registries in DataGeneratorEntrypoint#buildRegistry not functioning

[marlester-dev]

using registry builder, custom registries are not working:

    @Override
    public void buildRegistry(RegistrySetBuilder registryBuilder) {
        registryBuilder
                .add(Registries.CONFIGURED_FEATURE, TFConfiguredFeatures::bootstrap)
                .add(Registries.PLACED_FEATURE, TFPlacedFeatures::bootstrap)
                .add(Registries.STRUCTURE, TFStructures::bootstrap)
                .add(Registries.STRUCTURE_SET, TFStructureSets::bootstrap)
                .add(Registries.CONFIGURED_CARVER, TFCaveCarvers::bootstrap)
                .add(Registries.NOISE_SETTINGS, TFDimensionSettings::bootstrapNoise)
                .add(BiomeLayerStack.BIOME_STACK_KEY, BiomeLayerStack::bootstrap)
                .add(Registries.DIMENSION_TYPE, TFDimensionSettings::bootstrapType)
                .add(Registries.LEVEL_STEM, TFDimensionSettings::bootstrapStem)
                .add(Registries.BIOME, TFBiomes::bootstrap)
                .add(WoodPalettes.WOOD_PALETTE_TYPE_KEY, WoodPalettes::bootstrap)
                .add(Registries.DAMAGE_TYPE, TFDamageTypes::bootstrap)
                .add(Registries.TRIM_MATERIAL, TFTrimMaterials::bootstrap)
                .add(Restrictions.RESTRICTION_KEY, Restrictions::bootstrap)
                .add(MagicPaintingVariants.REGISTRY_KEY, MagicPaintingVariants::bootstrap);
    }

Error:

java.lang.IllegalArgumentException: Multiple entries with same key: twilight:biome_layer_stack=net.minecraft.core.RegistrySetBuilder$UniversalLookup@40f911e4 and twilight:biome_layer_stack=net.minecraft.core.RegistrySetBuilder$1@3f3ea394

I'm creating registry keys with ResourceKey.createRegistryKey(ResourceLocation)

[marlester-dev]

Seems like the error is coming from immutable builder map here in RegistrySetBuilder$BuildState:

        public static BuildState create(RegistryAccess registryAccess, Stream<ResourceKey<? extends Registry<?>>> registries) {
            CompositeOwner compositeOwner = new CompositeOwner();
            List<RuntimeException> list = new ArrayList();
            UniversalLookup universalLookup = new UniversalLookup(compositeOwner);
            ImmutableMap.Builder<ResourceLocation, HolderGetter<?>>/*the map ->*/ builder = ImmutableMap.builder();
            registryAccess.registries().forEach((registryEntry) -> {
                builder.put(registryEntry.key().location(), RegistrySetBuilder.wrapContextLookup(registryEntry.value().asLookup()));
            });
            registries.forEach((registryKey) -> {
                builder.put(registryKey.location(), universalLookup);
            });
            return new BuildState(compositeOwner, universalLookup, builder.build(), new HashMap(), list);
        }

[marlester-dev]

tested on mc 1.20.1