gt:         this.grow(world, i, j, k, random);
context: package net.minecraft.server;
  
  import java.util.Random;
  
  // CraftBukkit start
  import java.util.List;
  
  import org.bukkit.Location;
  import org.bukkit.TreeType;
  import org.bukkit.block.BlockState;
  import org.bukkit.event.world.StructureGrowEvent;
  // CraftBukkit end
  
  public class BlockSapling extends BlockPlant implements IBlockFragilePlantElement {
  
      public static final String[] a = new String[] { "oak", "spruce", "birch", "jungle", "acacia", "roofed_oak"};
      private static final IIcon[] b = new IIcon[a.length];
      public static TreeType treeType; // CraftBukkit
  
      protected BlockSapling() {
          float f = 0.4F;
  
          this.a(0.5F - f, 0.0F, 0.5F - f, 0.5F + f, f * 2.0F, 0.5F + f);
          this.a(CreativeModeTab.c);
      }
  
      public void a(World world, int i, int j, int k, Random random) {
          if (!world.isStatic) {
              super.a(world, i, j, k, random);
              if (world.getLightLevel(i, j + 1, k) >= 9 && (random.nextInt(Math.max(2, (int) ((world.growthOdds / world.spigotConfig.saplingModifier * 7) + 0.5F))) == 0)) { // Spigot
                  // CraftBukkit start
                  world.captureTreeGeneration = true;
                  // CraftBukkit end
                  this.grow(world, i, j, k, random);
                  // CraftBukkit start
                  world.captureTreeGeneration = false;
                  if (world.capturedBlockStates.size() > 0) {
                      TreeType treeType = BlockSapling.treeType;
                      BlockSapling.treeType = null;
                      Location location = new Location(world.getWorld(), i, j, k);
                      List<BlockState> blocks = (List<BlockState>) world.capturedBlockStates.clone();
                      world.capturedBlockStates.clear();
                      StructureGrowEvent event = null;
                      if (treeType != null) {
                          event = new StructureGrowEvent(location, treeType, false, null, blocks);
                          org.bukkit.Bukkit.getPluginManager().callEvent(event);
                      }
                      if (event == null || !event.isCancelled()) {
                          for (BlockState blockstate : blocks) {
                              blockstate.update(true);
                          }
                      }
                  }
                  // CraftBukkit end
              }
          }
      }
  
      public void grow(World world, int i, int j, int k, Random random) {
          int l = world.getData(i, j, k);
  
          if ((l & 8) == 0) {
              world.setData(i, j, k, l | 8, 4);
          } else {
              this.d(world, i, j, k, random);
          }
      }
  
      public void d(World world, int i, int j, int k, Random random) {
          int l = world.getData(i, j, k) & 7;
          // CraftBukkit start - Turn ternary operator into if statement to set treeType
          // Object object = random.nextInt(10) == 0 ? new WorldGenBigTree(true) : new WorldGenTrees(true);
          Object object;
          if (random.nextInt(10) == 0) {
              treeType = TreeType.BIG_TREE;
              object = new WorldGenBigTree(true);
          } else {
              treeType = TreeType.TREE;
              object = new WorldGenTrees(true);
          }
          // CraftBukkit end
          int i1 = 0;
          int j1 = 0;
          boolean flag = false;
  
          switch (l) {
          case 0:
          default:
              break;
  
          case 1:
              label78:
              for (i1 = 0; i1 >= -1; --i1) {
                  for (j1 = 0; j1 >= -1; --j1) {
                      if (this.a(world, i + i1, j, k + j1, 1) && this.a(world, i + i1 + 1, j, k + j1, 1) && this.a(world, i + i1, j, k + j1 + 1, 1) && this.a(world, i + i1 + 1, j, k + j1 + 1, 1)) {
                          treeType = TreeType.MEGA_REDWOOD; // CraftBukkit
                          object = new WorldGenMegaTree(false, random.nextBoolean());
                          flag = true;
                          break label78;
                      }
                  }
              }
  
              if (!flag) {
                  j1 = 0;
                  i1 = 0;
                  treeType = TreeType.REDWOOD; // CraftBukkit
                  object = new WorldGenTaiga2(true);
              }
              break;
  
          case 2:
              treeType = TreeType.BIRCH; // CraftBukkit
              object = new WorldGenForest(true, false);
              break;
  
          case 3:
              label93:
              for (i1 = 0; i1 >= -1; --i1) {
                  for (j1 = 0; j1 >= -1; --j1) {
                      if (this.a(world, i + i1, j, k + j1, 3) && this.a(world, i + i1 + 1, j, k + j1, 3) && this.a(world, i + i1, j, k + j1 + 1, 3) && this.a(world, i + i1 + 1, j, k + j1 + 1, 3)) {
                          treeType = TreeType.JUNGLE; // CraftBukkit
                          object = new WorldGenJungleTree(true, 10, 20, 3, 3);
                          flag = true;
                          break label93;
                      }
                  }
              }
  
              if (!flag) {
                  j1 = 0;
                  i1 = 0;
                  treeType = TreeType.SMALL_JUNGLE; // CraftBukkit
                  object = new WorldGenTrees(true, 4 + random.nextInt(7), 3, 3, false);
              }
              break;
  
          case 4:
              treeType = TreeType.ACACIA; // CraftBukkit
              object = new WorldGenAcaciaTree(true);
              break;
  
          case 5:
              label108:
              for (i1 = 0; i1 >= -1; --i1) {
                  for (j1 = 0; j1 >= -1; --j1) {
                      if (this.a(world, i + i1, j, k + j1, 5) && this.a(world, i + i1 + 1, j, k + j1, 5) && this.a(world, i + i1, j, k + j1 + 1, 5) && this.a(world, i + i1 + 1, j, k + j1 + 1, 5)) {
                          object = new WorldGenForestTree(true);
                          treeType = TreeType.DARK_OAK; // CraftBukkit
                          flag = true;
                          break label108;
                      }
                  }
              }
  
              if (!flag) {
                  return;
              }
          }
  
          Block block = Blocks.AIR;
  
          if (flag) {
              world.setTypeAndData(i + i1, j, k + j1, block, 0, 4);
              world.setTypeAndData(i + i1 + 1, j, k + j1, block, 0, 4);
              world.setTypeAndData(i + i1, j, k + j1 + 1, block, 0, 4);
              world.setTypeAndData(i + i1 + 1, j, k + j1 + 1, block, 0, 4);
          } else {
              world.setTypeAndData(i, j, k, block, 0, 4);
          }
  
          if (!((WorldGenerator) object).generate(world, random, i + i1, j, k + j1)) {
              if (flag) {
                  world.setTypeAndData(i + i1, j, k + j1, this, l, 4);
                  world.setTypeAndData(i + i1 + 1, j, k + j1, this, l, 4);
                  world.setTypeAndData(i + i1, j, k + j1 + 1, this, l, 4);
                  world.setTypeAndData(i + i1 + 1, j, k + j1 + 1, this, l, 4);
              } else {
                  world.setTypeAndData(i, j, k, this, l, 4);
              }
          }
      }
  
      public boolean a(World world, int i, int j, int k, int l) {
          return world.getType(i, j, k) == this && (world.getData(i, j, k) & 7) == l;
      }
  
      public int getDropData(int i) {
          return MathHelper.a(i & 7, 0, 5);
      }
  
      public boolean a(World world, int i, int j, int k, boolean flag) {
          return true;
      }
  
      public boolean a(World world, Random random, int i, int j, int k) {
          return (double) world.random.nextFloat() < 0.45D;
      }
  
      public void b(World world, Random random, int i, int j, int k) {
  