assert: Include description of duplicate key registration

This way its easier to track down the problem during GWT debug
sessions.

Change-Id: Idab1f1163069cba7285f986dcfebd34391b9045c
1 file changed
tree: 226a4818a120988f19c6fe6c75bbebb9546f18d6
  1. .gitignore
  2. .settings/
  3. COPYING
  4. GoogleFormat.xml
  5. pom.xml
  6. src/