Github user phrocker commented on a diff in the pull request:
https://github.com/apache/nifi-minifi-cpp/pull/148#discussion_r146259050
--- Diff: libminifi/include/core/ProcessSessionReadCallback.h ---
@@ -0,0 +1,33 @@
+#ifndef __PROCESS_SESSION_READ_CALLBACK_H__
--- End diff --
Since you broke this out into a different file ( thanks! ) it will need a
license header. ---
