Failure: backslashes are not correctly escaped by the value generator
Adding hotfix for the value generator: escaping also backslashes
Adding test group for reference
Converting tests for ValueGenerator escaping to use a data provider
Adding functional test to verify proper escaping of parameter defaults
Merge pull request #6023
Merge pull request #6023 in master
Remove duplicate comment
Merge pull request #6030
Merge pull request #6030 in master
Allow empty response strings in \Zend\Http\Response::fromStream