NewClient creates a new unicast client to the helloworld.example microservice.

NewMulticastClient creates a new multicast client to the helloworld.example microservice.

Hostname is the default hostname of the microservice: helloworld.example.

Fully-qualified URLs of the microservice's endpoints.

Client is an interface to calling the endpoints of the helloworld.example microservice.

MulticastClient is an interface to calling the endpoints of the helloworld.example microservice.