Thanks skoehler, for that ranty suggestion. That solved it for me!
I don’t understand what you mean about the CDT Indexer POV but getting rid of the quotes made the warnings go away and those functions became available in the project.
Every f***ing time I regenerate the sources of my project with CubeMX, I have to remove those quotes. They don’t belong there and certainly result in invalid syntax (from the CDT Indexer point of view).