Fixed NoSuchMethodError in WorldGenGroundBush

src/main/java/net/minecraft/server/WorldGenGroundBush.java

@@ -0,0 +1,56 @@
+package net.minecraft.server;
+
+import java.util.Random;
+
+import org.bukkit.BlockChangeDelegate; // CraftBukkit
+
+public class WorldGenGroundBush extends WorldGenerator {
+
+    private int a;
+    private int b;
+
+    public WorldGenGroundBush(int i, int j) {
+        this.b = i;
+        this.a = j;
+    }
+
+    public boolean a(World world, Random random, int i, int j, int k) {
+        // CraftBukkit start
+        return this.generate((BlockChangeDelegate) world, random, i, j, k);
+    }
+
+    public boolean generate(BlockChangeDelegate world, Random random, int i, int j, int k) {
+        // CraftBukkit end
+        int l;
+
+        for (boolean flag = false; ((l = world.getTypeId(i, j, k)) == 0 || l == Block.LEAVES.id) && j > 0; --j) {
+            ;
+        }
+
+        int i1 = world.getTypeId(i, j, k);
+
+        if (i1 == Block.DIRT.id || i1 == Block.GRASS.id) {
+            ++j;
+            world.setRawTypeIdAndData(i, j, k, Block.LOG.id, this.b);
+
+            for (int j1 = j; j1 <= j + 2; ++j1) {
+                int k1 = j1 - j;
+                int l1 = 2 - k1;
+
+                for (int i2 = i - l1; i2 <= i + l1; ++i2) {
+                    int j2 = i2 - i;
+
+                    for (int k2 = k - l1; k2 <= k + l1; ++k2) {
+                        int l2 = k2 - k;
+
+                        if ((Math.abs(j2) != l1 || Math.abs(l2) != l1 || random.nextInt(2) != 0) && !Block.n[world.getTypeId(i2, j1, k2)]) {
+                            this.setTypeAndData(world, i2, j1, k2, Block.LEAVES.id, this.a);
+                        }
+                    }
+                }
+            }
+        }
+
+        return true;
+    }
+}