PSI Implementation for C / CPP files

Hello,

I am implementing a code vision feature into the Pieces Jetbrains plugin.

My implementation is largely based off of the intellij-community VCSCodeVisionProvider: https://github.com/JetBrains/intellij-community/blob/master/platform/vcs-impl/src/com/intellij/codeInsight/hints/VcsCodeVisionProvider.kt

Along with some added hard coded language support based on PSI element types:

```kt

protected val hardCodedPSIElementTypes: Map<ClassificationSpecificEnum, List<String>> = mapOf(
    ClassificationSpecificEnum.DART to listOf(
        "CLASS_DEFINITION",
        "METHOD_DECLARATION",
        "FUNCTION_DECLARATION_WITH_BODY_OR_NATIVE"
    ),
    ClassificationSpecificEnum.CS to listOf(
        "cs:ctor-declaration",
        "cs:method-declaration",
        "cs:class-declaration"
    )
)

```

When I use the PSI viewer plugin to try and view PSI elements for C and CPP files however, it seems that the PSI provided is simply a ‘dummy’ PSI that does not contain critical information for this implementation strategy, do you have any recommendations?

FYI I have seen this post outlining how this process is different than other languages as it utilizes ReSharper: https://intellij-support.jetbrains.com/hc/en-us/community/posts/5232268857618-Discrepancies-between-Idea-and-Rider-for-PsiElement