Visual Studio does not display geant4 basic classes(solved)

Hello. I have installed Visual Studio on Ubuntu but it does not list geant4 basic classes and methods when programming. While listing c++ classes. Can something be done to list the basic classes and methods?
Do you know a code editor other than Visual Studio that gives us a list of geant4 classes when programming?
Thanks for your accountability

I installed the IntelliSense Extension in Visual Studio and the problem was fixed.
Installation Guide for Visual Studio Extensions: go to view -> Extensions -> search IntelliSense ->install