SnapshotScheduleCreateRequest

Name	Description	Schema
snapshot_retention_count optional	보관 개수 Example : `10`	any of [integer, null]
volume_id required	볼륨 아이디 Example : `bfdbabf2-04d9-4e8b-a205-020f8e6da438`	string
snapshot_schedule required		SnapshotSchedule