| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/google/cel-go/common/runes | Package runes provides interfaces and utilities for working with runes. |
| google.golang.org/genproto/googleapis/api/expr/v1alpha1 | |
| sort | Package sort provides primitives for sorting slices and user-defined collections. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| unicode/utf8 | Package utf8 implements functions and constants to support text encoded in UTF-8. |