Added Null Checks to be a bit more safe 💯

src/main/java/me/outspending/biomesapi/BiomeUpdaterImpl.java

@@ -10,7 +10,7 @@
 public class BiomeUpdaterImpl implements BiomeUpdater {
 
     @Override
-    public void updateChunk(Chunk chunk) {
+    public void updateChunk(@NotNull Chunk chunk) {
         updateChunks(List.of(chunk));
     }
 

src/main/java/me/outspending/biomesapi/biome/BiomeHandler.java

@@ -1,5 +1,6 @@
 package me.outspending.biomesapi.biome;
 
+import com.google.common.base.Preconditions;
 import me.outspending.biomesapi.annotations.AsOf;
 import me.outspending.biomesapi.exceptions.UnknownBiomeException;
 import me.outspending.biomesapi.registry.BiomeResourceKey;
@@ -50,6 +51,8 @@ public static List<CustomBiome> getRegisteredBiomes() {
      */
     @AsOf("0.0.1")
     public static @Nullable CustomBiome getBiome(@NotNull BiomeResourceKey resourceKey) {
+        Preconditions.checkNotNull(resourceKey, "resourceKey cannot be null");
+
         return registeredBiomes.stream()
                 .filter(b -> resourceKey.equals(b.getResourceKey()))
                 .findFirst()
@@ -68,6 +71,8 @@ public static List<CustomBiome> getRegisteredBiomes() {
      */
     @AsOf("0.0.1")
     public static boolean isBiome(@NotNull BiomeResourceKey resourceKey) {
+        Preconditions.checkNotNull(resourceKey, "resourceKey cannot be null");
+
         return getBiome(resourceKey) != null;
     }
 

src/main/java/me/outspending/biomesapi/nms/NMSHandler.java

@@ -2,6 +2,7 @@
 
 import me.outspending.biomesapi.annotations.AsOf;
 import me.outspending.biomesapi.exceptions.UnknownNMSVersionException;
+import me.outspending.biomesapi.nms.*;
 import org.bukkit.Bukkit;
 import org.jetbrains.annotations.NotNull;
 

src/main/java/me/outspending/biomesapi/registry/BiomeRegistry.java

@@ -37,15 +37,4 @@ static BiomeRegistry newRegistry() {
     @AsOf("0.0.1")
     void register(@NotNull CustomBiome biome);
 
-    /**
-     * This method unregisters a custom biome from a Minecraft server.
-     * It takes a DedicatedServer object and a CustomBiome object as arguments.
-     *
-     * @version 0.0.2
-     * @param biome The CustomBiome object that should be unregistered from the server.
-     */
-    @AsOf("0.0.2")
-    @Experimental
-    void unregister(@NotNull CustomBiome biome);
-
 }

src/main/java/me/outspending/biomesapi/registry/BiomeResourceKey.java

@@ -1,9 +1,12 @@
 package me.outspending.biomesapi.registry;
 
+import com.google.common.base.Preconditions;
 import me.outspending.biomesapi.annotations.AsOf;
 import net.minecraft.resources.ResourceLocation;
 import org.jetbrains.annotations.NotNull;
 
+import java.lang.annotation.Documented;
+
 /**
  * This class represents a key for a biome resource in the game.
  * It uses the @AsOf annotation to indicate the version since the class or its methods have been present or modified.
@@ -26,6 +29,9 @@ public record BiomeResourceKey(@NotNull ResourceLocation resourceLocation) {
      */
     @AsOf("0.0.1")
     public static @NotNull BiomeResourceKey of(@NotNull String key, @NotNull String path) {
+        Preconditions.checkArgument(!key.isEmpty(), "key cannot be empty");
+        Preconditions.checkArgument(!path.isEmpty(), "path cannot be empty");
+
         return new BiomeResourceKey(key, path);
     }
 
@@ -40,6 +46,8 @@ public record BiomeResourceKey(@NotNull ResourceLocation resourceLocation) {
      */
     @AsOf("0.0.1")
     public static @NotNull BiomeResourceKey of(@NotNull ResourceLocation resourceLocation) {
+        Preconditions.checkNotNull(resourceLocation, "resourceLocation cannot be null");
+
         return new BiomeResourceKey(resourceLocation);
     }
 

src/main/java/me/outspending/biomesapi/registry/CustomBiomeRegistry.java

@@ -1,5 +1,6 @@
 package me.outspending.biomesapi.registry;
 
+import com.google.common.base.Preconditions;
 import me.outspending.biomesapi.BiomeLock;
 import me.outspending.biomesapi.BiomeSettings;
 import me.outspending.biomesapi.annotations.AsOf;
@@ -35,6 +36,8 @@ public class CustomBiomeRegistry implements BiomeRegistry {
     @AsOf("0.0.1")
     @SuppressWarnings("unchecked")
     public void register(@NotNull CustomBiome biome) {
+        Preconditions.checkNotNull(biome, "biome cannot be null");
+
         BiomeLock.unlock(() -> {
 
             // Retrieve the biome registry from NMS
@@ -84,9 +87,4 @@ public void register(@NotNull CustomBiome biome) {
         });
     }
 
-    @Override
-    public void unregister(@NotNull CustomBiome biome) {
-        // TODO: Implement this method
-    }
-
 }

src/main/java/me/outspending/biomesapi/setter/BiomeSetter.java

@@ -11,6 +11,8 @@
 import org.bukkit.util.Vector;
 import org.jetbrains.annotations.NotNull;
 
+import javax.annotation.concurrent.NotThreadSafe;
+
 /**
  * This utility class provides methods to set the biome of blocks, chunks, and regions in the game.
  * It uses the @AsOf annotation to indicate the version since the class or its methods have been present or modified.

src/main/java/me/outspending/biomesapi/setter/GlobalBiomeSetter.java

@@ -1,5 +1,6 @@
 package me.outspending.biomesapi.setter;
 
+import com.google.common.base.Preconditions;
 import me.outspending.biomesapi.BiomeUpdater;
 import me.outspending.biomesapi.biome.CustomBiome;
 import me.outspending.biomesapi.misc.PointRange3D;
@@ -9,6 +10,8 @@
 import org.bukkit.util.Vector;
 import org.jetbrains.annotations.NotNull;
 
+import javax.annotation.concurrent.NotThreadSafe;
+
 public class GlobalBiomeSetter implements BiomeSetter {
 
     @SuppressWarnings("deprecation")
@@ -22,6 +25,9 @@ public void setBlockBiome(@NotNull Block block, @NotNull CustomBiome customBiome
 
     @Override
     public void setBlockBiome(@NotNull Block block, @NotNull CustomBiome customBiome, boolean updateBiome) {
+        Preconditions.checkNotNull(block, "block cannot be null");
+        Preconditions.checkNotNull(customBiome, "customBiome cannot be null");
+
         Location location = block.getLocation();
         RegionAccessor accessor = getRegionAccessor(location);
 
@@ -49,6 +55,9 @@ public void setChunkBiome(@NotNull Chunk chunk, int minHeight, int maxHeight, @N
 
     @Override
     public void setChunkBiome(@NotNull Chunk chunk, int minHeight, int maxHeight, @NotNull CustomBiome customBiome, boolean updateBiome) {
+        Preconditions.checkNotNull(chunk, "chunk cannot be null");
+        Preconditions.checkNotNull(customBiome, "customBiome cannot be null");
+
         RegionAccessor accessor = chunk.getWorld();
         NamespacedKey key = customBiome.toNamespacedKey();
 
@@ -109,6 +118,11 @@ public void setRegionBiome(@NotNull World world, @NotNull Vector from, @NotNull
 
     @Override
     public void setRegionBiome(@NotNull World world, @NotNull Location from, @NotNull Location to, @NotNull CustomBiome customBiome, boolean updateBiome) {
+        Preconditions.checkNotNull(world, "world cannot be null");
+        Preconditions.checkNotNull(from, "from cannot be null");
+        Preconditions.checkNotNull(to, "to cannot be null");
+        Preconditions.checkNotNull(customBiome, "customBiome cannot be null");
+
         if (!from.getWorld().equals(to.getWorld())) {
             throw new RuntimeException("Locations must be in the same world!");
         } else {