Greetings! I can't quite figure out how to add more than one tree generator to my biome. Here is the biome's code.

package fantasy_biomes.biomes;
import java.util.Random;

import fantasy_biomes.Main;
import fantasy_biomes.trees.WorldGenTulipTree;
import net.minecraft.block.Block;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.gen.feature.WorldGenerator;
public class BiomeEnchantedGrove extends BiomeGenBase
{
public BiomeEnchantedGrove(int par1)
{
super(par1);
this.minHeight = 0.1F;
this.maxHeight = 0.6F;
this.spawnableMonsterList.clear();
this.spawnableCreatureList.clear();
this.topBlock = ((byte)Main.blockEnchantedGrass.blockID);
this.fillerBlock = ((byte)Block.dirt.blockID);
this.theBiomeDecorator.treesPerChunk = 5;
this.setBiomeName("Enchanted Grove");
this.theBiomeDecorator.waterlilyPerChunk = 5;
}

public WorldGenerator getRandomWorldGenForTrees(Random par1Random)
{
        return (WorldGenerator)new WorldGenTulipTree(true);
}
}

 

Any help is greatly appreciated!

You can change the "biome decorator" of your biome, or override its decorate method to do more tree generation.