Imports
- github.com/golang/protobuf/ptypes/empty
- github.com/spacemeshos/api/release/go/spacemesh/v1
- github.com/spacemeshos/go-spacemesh/log
- golang.org/x/sync/errgroup
- google.golang.org/grpc
- google.golang.org/grpc/credentials/insecure
- google.golang.org/grpc/keepalive