| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/golang/protobuf/proto | Package proto provides functionality for handling protocol buffer messages. |
| google.golang.org/protobuf/cmd/protoc-gen-go/internal_gengo | |
| google.golang.org/protobuf/compiler/protogen | |
| google.golang.org/protobuf/reflect/protodesc | |
| google.golang.org/protobuf/reflect/protoreflect | |
| google.golang.org/protobuf/types/descriptorpb | |
| google.golang.org/protobuf/types/known/anypb | |
| google.golang.org/protobuf/types/known/durationpb | |
| google.golang.org/protobuf/types/known/emptypb | |
| google.golang.org/protobuf/types/known/structpb | |
| google.golang.org/protobuf/types/known/timestamppb | |
| google.golang.org/protobuf/types/known/wrapperspb | |
| google.golang.org/protobuf/types/pluginpb | |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| os/exec | Package exec runs external commands. |
| path | Package path implements utility routines for manipulating slash-separated paths. |
| path/filepath | Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |