Interface injection not working with kotlin

[CSneko]

I followed the tutorial in https://wiki.fabricmc.net/tutorial:interface_injection ，I injected a interface for a class. I can call the method in java but I can't call the method.

[cputnam-a11y]

And all of the methods are default?

[cputnam-a11y]

Doesn't kotlin have extension funs?

[CSneko]

Yes, they are default, they like this

[cputnam-a11y]

And you have regenerated sources and reloaded gradle?

[CSneko]

Yes , I did that. I found a way to solve it,it's may be Ok.