sourceInstantSnapshotId property
The unique ID of the instant snapshot used to create this disk.
This value identifies the exact instant snapshot that was used to create this persistent disk. For example, if you created the persistent disk from an instant snapshot that was later deleted and recreated under the same name, the source instant snapshot ID would identify the exact version of the instant snapshot that was used.
Output only.
Implementation
core.String? sourceInstantSnapshotId;