private bool IsHandlerExists(Lifetime lifetime, int projectId, string className, string methodName) { var indicator = NullProgressIndicator.CreateCancellable(lifetime); using (TryReadLockCookie.Create(indicator, _locks, () => !lifetime.IsAlive || _locks.ContentModelLocks.IsWriteLockRequested)) { var project = _projectModelViewHost.GetItemById <IProject>(projectId); Assertion.AssertNotNull(project, "project instance should not be null"); _logger.Verbose($"Searching handler with name '{className}.{methodName}' in the project {project}..."); var psiModules = project.GetPsiModules(); foreach (var psiModule in psiModules) { using (CompilationContextCookie.OverrideOrCreate(psiModule.GetContextFromModule())) { var scope = _symbolCache.GetSymbolScope(psiModule, false, true); var typeElements = scope.GetElementsByQualifiedName(className).OfType <IClass>(); foreach (var typeElement in typeElements) { InterruptableActivityCookie.CheckAndThrow(indicator); foreach (var method in typeElement.Methods) { if (method.ShortName != methodName) { continue; } if (!LambdaFinder.IsSuitableLambdaMethod(method)) { continue; } return(true); } } } } } return(false); }