Collects results and status updates from providers.
Assembly: Microsoft.VisualStudio.Language.NavigateTo.Interfaces (in Microsoft.VisualStudio.Language.NavigateTo.Interfaces.dll)
Reports a matching NavigateToItem.
Signals that a provider has finished its search.
Signals that a provider's results for the most recent search are not valid.
Informs the callback about the provider's progress in the search.
It is valid to call the methods of this class in any order.