In general you are correct, but newcomers are more familiar with a click paradigm that a select &doIt paradigm

so this specific case is different.�� In the interest of teaching how to fish :), here is how you can discover these sorts of answers for yourself...��

Tools > Finder > Source

then search for... ProfStef go

and you'll see...�� WelcomeHelp-class>>learn

which does...����(self doItFrom: 'ProfStef go.')

Double-clicking "doItFrom:" selects it, then hitting <Ctrl-M> does "Code search... > implementors of it"

that is commented...�� [left as an exercise for the reader]