Imports
- github.com/golang/protobuf/proto
- github.com/golang/protobuf/ptypes/empty
- github.com/golang/protobuf/ptypes/timestamp
- github.com/hyperledger/fabric/common/util
- github.com/hyperledger/fabric/protos/common
- github.com/op/go-logging
- golang.org/x/net/context
- google.golang.org/grpc