This convention allows you to change the replication mode for index and transformer definitions when they are created (or changed) by the client code (AbstractIndexCreationTask.Execute / AbstractTransformerCreationTask.Execute). It is an enum type with [Flags] attributes applied. The possible values are:
None - Neither indexes nor transformers are updated to replicated instances.
Indexes - All created indexes are replicated.
Transformers - All transformers are replicated.
By default, both indexes and transformers are uploaded to the replication nodes: