Duration

Describes the length of a period of a time.

JSON representation 
{
  "unit": enum (Unit),
  "count": integer
}
Fields
unit

enum (Unit)

The unit used for the duration
count

integer

number of duration units to be included.

Unit

Frequency of the period.

Enums
UNIT_UNSPECIFIED Default value, reserved as an invalid or an unexpected value.
MONTH Unit of a calendar month.
DAY Unit of a day.
HOUR Unit of an hour. It is used for testing.