It's useful for me to get the view of symbol tree by Code Outline in vscode. However, it depends on the symbol parse of various languages. vscode-java is helpful for me in most way, but It is slightly flawed about symbol.

As follows:

I can not get infomation about class when I pressed ctrl+shift+o. So code oultine offer me a flat list of
all property in code.

I hope that vscode-java offer me the infomation about class in File.