Bonemeal Event 
To use this event use the following import:
groovy
import net.minecraftforge.event.entity.player.BonemealEventSub-Classes 
This event extends the following events and can use all their methods and fields: 
PlayerEvent, LivingEvent, EntityEvent
Methods 
groovy
net.minecraft.item.ItemStack getStack()groovy
net.minecraft.block.state.IBlockState getBlock()groovy
boolean hasResult()groovy
net.minecraft.util.EnumHand getHand()groovy
net.minecraft.util.math.BlockPos getPos()groovy
net.minecraft.world.World getWorld()