Github user achristianson commented on a diff in the pull request:
https://github.com/apache/nifi-minifi-cpp/pull/307#discussion_r186519113
--- Diff: extensions/expression-language/base64.h ---
@@ -0,0 +1,188 @@
+/***************************************************************************
--- End diff --
Rebased to fix conflicts. The reason it's here rather than 3rd-party is
that it's specific functions copied/pasted, not a third party lib. We
own/adopted the code now and it won't be maintained by a third party.
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