Microsoft.CodeAnalysis.Completion.CompletionService.ShouldTriggerCompletion(Microsoft.CodeAnalysis.Project, Microsoft.CodeAnalysis.Host.LanguageServices, Microsoft.CodeAnalysis.Text.SourceText, System.Int32, Microsoft.CodeAnalysis.Completion.CompletionTrigger, Microsoft.CodeAnalysis.Completion.CompletionOptions, Microsoft.CodeAnalysis.Options.OptionSet, System.Collections.Immutable.ImmutableHashSet<System.String>)