content: package net.minecraft.world.gen.feature;
  
  import net.minecraft.block.material.Material;
  import net.minecraft.init.Blocks;
  import net.minecraft.util.BlockPos;
  import net.minecraft.util.EnumFacing;
  import net.minecraft.world.World;
  
  import java.util.Random;
  
  public class WorldGenGlowStone1 extends WorldGenerator {
      public boolean generate(World worldIn, Random rand, BlockPos position) {
          if (!worldIn.isAirBlock(position)) {
              return false;
          } else if (worldIn.getBlockState(position.up()).getBlock() != Blocks.netherrack) {
              return false;
          } else {
              worldIn.setBlockState(position, Blocks.glowstone.getDefaultState(), 2);
  
              for (int i = 0; i < 1500; ++i) {
                  BlockPos blockpos = position.add(rand.nextInt(8) - rand.nextInt(8), -rand.nextInt(12), rand.nextInt(8) - rand.nextInt(8));
  
                  if (worldIn.getBlockState(blockpos).getBlock().getMaterial() == Material.air) {
                      int j = 0;
  
                      for (EnumFacing enumfacing : EnumFacing.values()) {
                          if (worldIn.getBlockState(blockpos.offset(enumfacing)).getBlock() == Blocks.glowstone) {
                              ++j;
                          }
  
                          if (j > 1) {
                              break;
                          }
                      }
  
                      if (j == 1) {
                          worldIn.setBlockState(blockpos, Blocks.glowstone.getDefaultState(), 2);
                      }
                  }
              }
  
              return true;
          }
      }
  }
  