ReadonlyendReadonlyfrequencyString (Enumerable oneOf). Specify whether to use day or month buckets. If any other value is provided, defaults to day.
ReadonlystartString (ISO 8601 Datetime). The start date for the time period. If a time is provided, it will be ignored.
String (ISO 8601 Datetime). The end date for the time period. If a time is provided, it will be ignored.