Contains the sieve framework.
A {@link Int.ecb.gesmescb.sieve.GESMESCBEventSieve} distributes the data stream to two outgoing streams. Each element is judged using a {@link Int.ecb.gesmescb.sieve.GESMESCBObjectFilter} as to where to go.
The background for this sieving is that usually data flows must obey additional restrictions on top of syntactic and semantic correctness. E.g. a data flow from one country may not be allowed to report data about a different one.