Public API
This is an override example (see architectural_design.rst’s
“Authoring Pages Alongside Diagrams”): this file shares its stem with
public_api.puml, so it replaces that diagram’s generated wrapper page
outright. The diagram is still staged as a sibling, so it can be embedded
here directly.
The SEooC exposes exactly one operation, GetNumber(), on
SampleLibraryAPI.