See http://old.nabble.com/Java-7-automatic-resource-management-and-suppressed-exceptions-to31821324.html

Java SE 7 adds a new feature to Throwable. http://www.oracle.com/technetwork/articles/java/trywithresources-401775.html explains this in detail.

Relevant for us is the following new method:
Throwable[] getSuppressed()

It can optionally contain a list of Throwables that were suppressed by the new Java SE 7 try-with-resource functionality.

We need to add support for that method be means of reflection.