| encoding/binary | Package binary implements simple translation between numbers and byte sequences and encoding and decoding of varints. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| google.golang.org/protobuf/proto | Package proto provides functions operating on protocol buffer messages. |
| google.golang.org/protobuf/reflect/protoreflect | Package protoreflect provides interfaces to dynamically manipulate messages. |
| google.golang.org/protobuf/runtime/protoiface | Package protoiface contains types referenced or implemented by messages. |
| google.golang.org/protobuf/runtime/protoimpl | Package protoimpl contains the default implementation for messages generated by protoc-gen-go. |
| google.golang.org/protobuf/types/known/anypb | Package anypb contains generated types for google/protobuf/any.proto. |
| google.golang.org/protobuf/types/known/durationpb | Package durationpb contains generated types for google/protobuf/duration.proto. |
| google.golang.org/protobuf/types/known/fieldmaskpb | Package fieldmaskpb contains generated types for google/protobuf/field_mask.proto. |
| google.golang.org/protobuf/types/known/structpb | Package structpb contains generated types for google/protobuf/struct.proto. |
| google.golang.org/protobuf/types/known/timestamppb | Package timestamppb contains generated types for google/protobuf/timestamp.proto. |
| google.golang.org/protobuf/types/known/wrapperspb | |
| io | Package io provides basic interfaces to I/O primitives. |
| math | Package math provides basic constants and mathematical functions. |
| math/bits | Package bits implements bit counting and manipulation functions for the predeclared unsigned integer types. |
| reflect | Package reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |