• civil_kind : absl::time_internal::cctz::time_zone::civil_lookup
• CivilKind : absl::TimeZone::TimeInfo
• CompareResult : absl::hash_internal::SpyHashStateImpl< T >
• DateFormat : absl::time_internal::cctz::PosixTransition
• Id : absl::str_format_internal::ConversionChar , absl::str_format_internal::LengthMod
• Kind : absl::TimeConversion
• State : absl::base_internal::PerThreadSynch , absl::strings_internal::SplitIterator< Splitter >
• StoragePolicy : absl::str_format_internal::FormatArgImpl