ETCH-272 Fixing code generation error

Fixing code generation when dealing with hashtables

Change-Id: I1aae4bba5f6c4335b536990084d96a87c4b02e64

git-svn-id: https://svn.apache.org/repos/asf/etch/trunk@1482721 13f79535-47bb-0310-9956-ffa450edef68