Method of ICompletionProvider
Called on Completion request, to collect completion items
var pbContinue = CompletionProvider.Collect(pView, pSelection, pSet);
pbContinue = CompletionProvider.Collect pView, pSelection, pSet
VARIANT_BOOL bContinue; HRESULT hr = CompletionProvider.Collect(pView, pSelection, pSet, &bContinue);