UPDATE: toString()

git-svn-id: https://svn.javlin.eu/svn/cloveretl.opensource/trunk-4-0@16396 a09ad3ba-1a0f-0410-b1b9-c67202f10d70
MINOR: missing override annotation added

git-svn-id: https://svn.javlin.eu/svn/cloveretl.opensource/trunk-4-0@16397 a09ad3ba-1a0f-0410-b1b9-c67202f10d70