Provide more detailed outline of R6 classes

I might not know how to make it happen in VS Code or if it belongs to https://github.com/REditorSupport/vscode-r-lsp , but I have noticed that the outline of R6 classes could be improved. Currently, the outline shows only the names of R6 classes. It would be amazing if it could show declarations of members inside R6 classes - immensely helpful for big classes.

Here is my VSCode settings.json

{
    "files.associations": {
        "*.rmd": "markdown"
    },
    "workbench.editorAssociations": {
        "*.ipynb": "jupyter.notebook.ipynb"
    },
    "r.bracketedPaste": true,
    "r.rpath.linux": "/usr/local/bin/R",
    "r.rterm.linux": "/usr/local/bin/radian",
    "r.sessionWatcher": true,
    "r.workspaceViewer.removeHiddenItems": true,
    "editor.cursorSmoothCaretAnimation": true,
    "editor.formatOnType": true,
    "editor.inlineSuggest.enabled": true,
    "files.insertFinalNewline": true,
    "files.trimFinalNewlines": true,
    "files.trimTrailingWhitespace": true,
}

The outline:

Environment:
languageserver version 0.3.10
R LSP Client 0.1.16

Reproduce the outline behavior in VS Code using languageserver 0.3.10 and R LSP Client 0.1.16, then inspect the language server's document-symbol handling for R6 classes. Done means the outline shows declarations of members inside R6 classes, not only the class names; the issue names no source file or test to begin with.