So now you won't see those indications from the IDE. The biggest benefit of default methods in interfaces is that let's say you are implementing an interface that has 10 methods defined in it, you can just implement whatever you need and the rest of the behavior comes via the default methods in the interface. Reference- https://github.com/cbeust/testng/issues/1964"
My Suggestion : Try using 6.14.3 for now