This class was added here to handle displaying TFS style links in error messages or other types of notifications within Team Explorer. Any string with the form "Click [here](vstfs:///build/build/23) to open the build." will be displayed as "Click here to open the build." but the word here will be a hyperlink that will have a tooltip of the URI and when it is clicked will start IClientLinking.ExecuteDefaultAction on the URI. NOTE: TextBlock was subclassed because the Inlines property cannot be bound to.TODO_VNEXT: We may want to promote this class so that it can be used more widely if we find it generally useful.