AWS SDK for .NET Documentation
SourceType Property
AmazonAmazon.RDS.ModelDescribeEventsRequestSourceType Did this page help you?   Yes   No    Tell us about it...
The event source to retrieve events for. If no value is specified, all events are returned.

Constraints:

Allowed Values
db-instance, db-parameter-group, db-security-group, db-snapshot

Declaration Syntax
C#
public string SourceType { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)