The identifier for the source DB snapshot. Constraints:

• Must specify a valid system snapshot in the "available" state.
• If the source snapshot is in the same region as the copy, specify a valid DB snapshot identifier.
• If the source snapshot is in a different region than the copy, specify valid DB snapshot ARN. For more information, go to Copying a DB Snapshot.

Example: rds:mydb-2012-04-02-00-01 Example: arn:aws:rds:rr-regn-1:123456789012:snapshot:mysql-instance1-snapshot-20130805

public string SourceDBSnapshotIdentifier { get; set; }