Dial returns a GRPC connection for use communicating with a Google cloud service, configured with the given ClientOptions.

DialInsecure returns an insecure GRPC connection for use communicating with fake or mock Google cloud service implementations, such as emulators.

DialPool returns a pool of GRPC connections for the given service.

WithConnPool returns a ClientOption that specifies the ConnPool connection to use as the basis of communications.

ConnPool is a pool of grpc.ClientConns.