Get file path related to source directory

Hello,

I need to get source file path related to current source directory. For example, if I have Maven project with path:

/home/username/Projects/MyProject//test/java/com/test/MyFileTest.java

I need to get "/com/test/".

But if will be simple Java Project with path: /home/username/Projects/MyProject/src/com/test/MyFileTest.java

In this case I also need to get "/com/test/".

I made it via:

PsiDirectory psiFileParent = psiFile.getParent();
ItemPresentation presentation = PsiDirectory.class.cast(psiFileParent).getPresentation();
String locationString = presentation.getLocationString();

But this approach don't work for PyCharm projects (or for GoLand).

Can you, please, help me?

Regards,

Aleksandr.