The point is that “trigger” is a jQuery method – just like “height” or “css”, or “bind”. Its not a part of the grid software at all; it just fires a named event. You can call it on /any/ jQuery element, not just a grid.
So it would probably be better to not document “trigger” as a grid method at all, and instead add an “events” section where you document “reloadGrid” (with an example of how to fire the event).
To a certain extent, I agree that it /is/ inconsistent, however. Its not really clear (to me, at least) why this one operation was done via events, while everything else was done via grid methods…
Mark