md3 = createModuleDescriptorToSort("md3", "rev3");
md4 = createModuleDescriptorToSort("md4", "rev4");
settings = new SimpleSortEngineSettings();
settings.setCircularDependencyStrategy(WarnCircularDependencyStrategy.getInstance());
settings.setVersionMatcher(new ExactVersionMatcher());
sortEngine = new SortEngine(settings);
nonMatchReporter = new SilentNonMatchingVersionReporter();
}