[ https://issues.jboss.org/browse/CDI-729?page=com.atlassian.jira.plugin.sy... ] Romain Manni-Bucau commented on CDI-729: ---------------------------------------- [~mkouba] how do you embrace the rich semantic without the stage as a param? If you drop it then it means you just use thenCompose which is a very small portion of the API. No acceptEither etc... If they are notified in parallel you get N stages and can replace the "submitted" stage by the returned one to notify the completion to the caller. This is the goal of the returned instance. In summary: param = rich compose API with fallback support etc, returned type = enrichment of the "wait" logic of the returned instance to the caller to give caller the guarantee all is execpted (= same guarantee than in sync mode but reactive style) -- This message was sent by Atlassian JIRA (v7.5.0#75005)