CreateGRPCChannel currently unused.

CreateLocalChannel creates a gRPC connection with user code.

GetDialAddressPrefix returns a dial prefix for a gRPC client connections For a given DaprMode.

Channel is a concrete AppChannel implementation for interacting with gRPC based user code.

Manager is a wrapper around gRPC connection pooling.

ClientConnCloser combines grpc.ClientConnInterface and io.Closer to cover the methods used from *grpc.ClientConn.