{"action":"created","comment":{"url":"https://api.github.com/repos/akka/akka/pulls/comments/33449443","id":33449443,"diff_hunk":"@@ -17,11 +17,12 @@ object FlattenStrategy {\n    * emitting its elements directly to the output until it completes and then taking the next stream. This has the\n    * consequence that if one of the input stream is infinite, no other streams after that will be consumed from.\n    */\n-  def concat[T, U]: FlattenStrategy[Source[T, U], T] = Concat[T, U]()\n+  def concat[T, U]: FlattenStrategy[Source[T, U], T] = _concat.asInstanceOf[FlattenStrategy[Source[T, U], T]]\n \n+  private[this] final val _concat = Concat[Any]()\n   /**\n    * INTERNAL API\n    */\n-  private[akka] final case class Concat[T, U]() extends FlattenStrategy[Source[T, U], T]\n+  private[akka] final case class Concat[T]() extends FlattenStrategy[Source[T, Any], 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this is internal api","created_at":"2015-06-29T09:57:53Z","updated_at":"2015-06-29T09:57:53Z","html_url":"https://github.com/akka/akka/pull/17856#discussion_r33449443","pull_request_url":"https://api.github.com/repos/akka/akka/pulls/17856","_links":{"self":{"href":"https://api.github.com/repos/akka/akka/pulls/comments/33449443"},"html":{"href":"https://github.com/akka/akka/pull/17856#discussion_r33449443"},"pull_request":{"href":"https://api.github.com/repos/akka/akka/pulls/17856"}}},"pull_request":{"url":"https://api.github.com/repos/akka/akka/pulls/17856","id":38680848,"html_url":"https://github.com/akka/akka/pull/17856","diff_url":"https://github.com/akka/akka/pull/17856.diff","patch_url":"https://github.com/akka/akka/pull/17856.patch","issue_url":"https://api.github.com/repos/akka/akka/issues/17856","number":17856,"state":"open","locked":false,"title":"This is not the commit message you're looking 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