Defined in github.com/aws/aws-sdk-go/service/rds/api.go
The list of identifiers of the event sources for which events will be returned. If not specified, then all sources are included in the response. An identifier must begin with a letter and must contain only ASCII letters, digits, and hyphens; it cannot end with a hyphen or contain two consecutive hyphens.
If SourceIds are supplied, SourceType must also be provided. If the source type is a DB instance, then a DBInstanceIdentifier must
If the source type is a DB security group, a DBSecurityGroupName must
If the source type is a DB parameter group, a DBParameterGroupName must
If the source type is a DB snapshot, a DBSnapshotIdentifier must be supplied.