Keep in mind that ValidationPipe requires both class-validator and class-transformer packages to be installed.
The built-in ValidationPipe offers more options than in the sample we built in this chapter, which has been kept basic for the sake of illustrating the basic mechanics of a pipe. You can find lots of examples here.
With variable source routing, successive intermediate destinations can be separated by one or closed routers. The maximum number of addresses or names in the host list is 9.