Describe the bug

While inspecting the AE2 sources there are a lot of errors related to Minecraft mappings not being preserved. This makes e.g. IDEA complain a lot about that the source code does not match the bytecode for classes.
It is annoying, but not necessarily a big problem.

How to reproduce the bug

1. Create a new fabric mod
2. Add dependencies for AE2 api, as described in AE2 README
3. Navigate to view source code of e.g. ICablePart

This will show that e.g. net.minecraft.world.entity.player.Player is net.minecraft.class_1657 which is not what is expected.

Expected behavior

net.minecraft.world.entity.player.Player class in the AE2 Source jar should be shown as net.minecraft.world.entity.player.Player and not net.minecraft.class_1657 which is currently shown.

Additional details

No response

Which minecraft version are you using?

1.18

On which mod loaders does it happen?

Fabric

Crash log

not relevant

#6450 is the solution, hasn't been implemented yet though.