SPIGOT-3664: Add Material getter to ChunkSnapshot

src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java

@@ -1,6 +1,7 @@
 package org.bukkit.craftbukkit;
 
 import org.bukkit.ChunkSnapshot;
+import org.bukkit.Material;
 import org.bukkit.block.Biome;
 import org.bukkit.craftbukkit.block.CraftBlock;
 
@@ -52,6 +53,11 @@ public class CraftChunkSnapshot implements ChunkSnapshot {
         return worldname;
     }
 
+    @Override
+    public Material getBlockType(int x, int y, int z) {
+        return Material.getMaterial(getBlockTypeId(x, y, z));
+    }
+
     public final int getBlockTypeId(int x, int y, int z) {
         return blockids[y >> 4][((y & 0xF) << 8) | (z << 4) | x];
     }