akka/akka — pull request #16016 by patriknw (2014-10-01 20:22:06+00:00)
Title: +str #15905 Add capability to merge and connect flow graphs

* import edges of another flow graph to the builder
* connect undefined sink with undefined source, which may originate
from different flow graphs
* illustrate how this low level api can be used in a high level api
(lego bricks)