| google.golang.org/grpc/encoding/internal | Package internal contains code internal to the encoding package. |
| google.golang.org/grpc/internal/grpcutil | Package grpcutil provides utility functions used across the gRPC codebase. |
| google.golang.org/grpc/mem | Package mem provides utilities that facilitate memory reuse in byte slices that are used as buffers. |
| io | Package io provides basic interfaces to I/O primitives. |
| slices | Package slices defines various functions useful with slices of any type. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |