[manifold-ext] Implementing Map requires implementing ICallHandler#call

[ByThePowerOfScience]

Describe the bug
When writing a class that implements java.util.Map while using manifold-ext, IDEA's linter requires that I override ICallHandler#call since it does not have a default implementation in the interface.

To Reproduce
Steps to reproduce the behavior:

1. Make a class that implements Map
2. The IDE will display a red line under the class declaration saying that you need to implement call.

Expected behavior
As ICallHandler doesn't actually exist on the Map type, it shouldn't be required to be implemented on a custom map.

Desktop (please complete the following information):

• OS Type & Version: OSX 12.7.6
• Java/JDK version: 17
• IDE version (IntelliJ IDEA or Android Studio): IDEA 2024.1.7
• Manifold version: manifold-delegation:2024.1.38
• Manifold IntelliJ plugin version: 2024.1.13

[rsmckinney]

Thanks for reporting this. What I see in IntelliJ is this is only an issue when you generate the implementation via Implement methods quick fix, it automatically selects the call() method for implementation, if you unselect it, all is well. I am looking into why IJ is doing this since, internally, call() is modeled as a default interface method.