Refactor PeopleMessageFormatter and Worker to handle potential null values and ensure required properties are accessed directly

Author: niteshsinghal85

src/Examples/OpenApiNSwagClientExample/PeopleMessageFormatter.cs

@@ -36,9 +36,9 @@ private static string WritePeople(ApiResponse<PersonCollectionResponseDocument?>
 
     private static void WritePerson(DataInPersonResponse person, ICollection<ResourceInResponse> includes, StringBuilder builder)
     {
-        ICollection<TodoItemIdentifierInResponse> assignedTodoItems = person.Relationships.AssignedTodoItems?.Data ?? [];
+        ICollection<TodoItemIdentifierInResponse> assignedTodoItems = person.Relationships?.AssignedTodoItems?.Data ?? [];
 
-        builder.AppendLine($"  Person {person.Id}: {person.Attributes.DisplayName ?? string.Empty} with {assignedTodoItems.Count} assigned todo-items:");
+        builder.AppendLine($"  Person {person.Id}: {person.Attributes?.DisplayName ?? string.Empty} with {assignedTodoItems.Count} assigned todo-items:");
         WriteRelatedTodoItems(assignedTodoItems, includes, builder);
     }
 
@@ -50,7 +50,7 @@ private static void WriteRelatedTodoItems(IEnumerable<TodoItemIdentifierInRespon
             DataInTodoItemResponse includedTodoItem = includes.OfType<DataInTodoItemResponse>().Single(include => include.Id == todoItemIdentifier.Id);
             ICollection<TagIdentifierInResponse> tags = includedTodoItem.Relationships?.Tags?.Data ?? [];
 
-            builder.AppendLine($"    TodoItem {includedTodoItem.Id}: {includedTodoItem.Attributes.Description ?? string.Empty} with {tags.Count} tags:");
+            builder.AppendLine($"    TodoItem {includedTodoItem.Id}: {includedTodoItem.Attributes?.Description ?? string.Empty} with {tags.Count} tags:");
             WriteRelatedTags(tags, includes, builder);
         }
     }

src/Examples/OpenApiNSwagClientExample/Worker.cs

@@ -165,7 +165,7 @@ private async Task SendOperationsRequestAsync(CancellationToken cancellationToke
 
         ApiResponse<OperationsResponseDocument> operationsResponse = await _apiClient.PostOperationsAsync(operationsRequest, cancellationToken);
 
-        var newTodoItem = (DataInTodoItemResponse)operationsResponse.Result.Atomic_results.ElementAt(3).Data;
+        var newTodoItem = (DataInTodoItemResponse)operationsResponse.Result.Atomic_results.ElementAt(3).Data!;
         Console.WriteLine($"Created todo-item with ID {newTodoItem.Id}: {newTodoItem.Attributes?.Description ?? string.Empty}.");
     }
 }