Issue due to outdated protobuf go-bindings #26
Description
This issue was seen while importing prometheus/client_golang.
go get github.com/prometheus/client_golang/prometheus/promhttp
# github.com/prometheus/client_model/go
client_model/go/metrics.pb.go:96:31: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:141:27: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:179:29: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:218:30: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:265:29: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:317:29: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:357:31: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:410:28: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:461:28: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:544:34: undefined: proto.InternalMessageInfo
client_model/go/metrics.pb.go:544:34: too many errors