[Flutter] How to find all functions of a class in Flutter?

The Auto completion shows what I am looking for. It list all the methods and fields of a given and even included inherited properties.



However, I would like to see in a separate windows like the Flutter Outline.



However, the Flutter Outline shows only the top level functions.

It seems like Other languages like TypeScript, Kotlin and Java supports it but I BADLY need it in Dart.

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