implement getBaseBiome

common/addons/biome-provider-single/src/main/java/com/dfsek/terra/addons/biome/single/SingleBiomeProvider.java

@@ -8,6 +8,7 @@
 package com.dfsek.terra.addons.biome.single;
 
 import java.util.Collections;
+import java.util.Optional;
 
 import com.dfsek.terra.api.world.biome.Biome;
 import com.dfsek.terra.api.world.biome.generation.BiomeProvider;
@@ -25,6 +26,11 @@ public class SingleBiomeProvider implements BiomeProvider {
         return biome;
     }
     
+    @Override
+    public Optional<Biome> getBaseBiome(int x, int z, long seed) {
+        return Optional.of(biome);
+    }
+    
     @Override
     public Iterable<Biome> getBiomes() {
         return Collections.singleton(biome);