in src/main/java/com/amazonaws/services/dynamodbv2/streams/connectors/CommandLineInterface.java [234:237]
EndpointConfiguration createKclDynamoDbEndpointConfiguration() {
return createEndpointConfiguration(kclRegion.or(sourceRegion),
kclRegion.isPresent() ? kclDynamodbEndpoint : sourceDynamodbEndpoint, AmazonDynamoDB.ENDPOINT_PREFIX);
}