PMD 5.x migration
- I still have 4 not commited files in my working-set
    - TooManyStatesInMxmlRule
    - TooShortVariableRule
    - TooFewBranchesInSwitchStatementRule
    - ParametrizedRegExpBasedRuleTest
  As these all need parameters and I haven't quite figgured out how to update the code yet ... so don't be surprised about compilation errors.