Widen the type to fix reflective invocation.

git-svn-id: http://svn.terracotta.org/svn/ehcache@7890 b9324663-ca0f-0410-8574-be9b3887307d
Merged 7890.


git-svn-id: http://svn.terracotta.org/svn/ehcache@7891 b9324663-ca0f-0410-8574-be9b3887307d