Structs

ISO 8601 combined date and time with time zone.

ISO 8601 time duration with nanosecond precision. This also allows for the negative duration; see individual methods for details.

The time zone with fixed offset, from UTC-23:59:59 to UTC+23:59:59.

Enums

A description of what went wrong with the push notification. Referred from Firebase documentation

Fatal errors. Referred from Firebase documentation