// Creating an instance of ICrudService ICrudService crudService = new MyCrudService(); // Creating a new entity asynchronously var entity = new MyEntity { Name = "John Smith", Age = 35 }; await crudService.CreateAsync(entity);In this example, we create a new instance of the MyCrudService class which implements the ICrudService interface. We then create a new entity object with a name and age property and use the CreateAsync method to insert it into the database. The package library that includes the ICrudService interface and the CreateAsync method could vary depending on the implementation. However, popular packages that include CRUD operations for database operations in C# include Entity Framework Core, Dapper, and MongoDB.Driver.