[1.8] Access Transformers

I tried to add an access transformer as such:

In my build.gradle file:

jar {
        manifest {
        attributes 'FMLAT': 'ezstorage_at.cfg'
    }
}

In my META-INF folder, a file called "ezstorage_at.cfg":

#Forge access transformer config file

#GuiContainer
public net.minecraft.client.gui.inventory.GuiContainer drawSlot(Lnet/minecraft/inventory/Slot;)V #renderSlot

Then, I run "./gradlew setupDecompWorkspace eclipse"

But, the drawSlot method is still private. This worked in 1.7.10... what am I doing wrong now?