refactoring: renamed class (#3)
added class stub (#3)
improved class stub (#3)
removed unused use-statement (#3)
added iterator stub (#3)
added iterator stub (#3)
added test stubs (#3)
added test stub (#3)
added comments (#3)
refactoring: renamed attribute (#3)
defined additional services for testing (#3)
implemented tests (#3)
implemented application service iterator (#3)
added test case stub (#3)
added basic test initialization (#3)
added comments (#3)
implemented tests (#3)
defined expected exception (#3)
changed concept: use factory instead of iterator for service instantiation (#3)
implemented service creator (#3)