public PackageMaterialProperties repositoryConfiguration() {
   PackageMaterialProperties repositoryConfigurationResponse = new PackageMaterialProperties();
   repositoryConfigurationResponse.addPackageMaterialProperty(Constants.REPO_URL, url());
   repositoryConfigurationResponse.addPackageMaterialProperty(Constants.USERNAME, username());
   repositoryConfigurationResponse.addPackageMaterialProperty(Constants.PASSWORD, password());
   return repositoryConfigurationResponse;
 }
 public PackageMaterialProperties packageConfiguration() {
   PackageMaterialProperties packageConfigurationResponse = new PackageMaterialProperties();
   packageConfigurationResponse.addPackageMaterialProperty(Constants.PACKAGE_SPEC, packageSpec());
   return packageConfigurationResponse;
 }