### Question:
RangerAuthorizationService extends BaseHadoopAuthorizationService { @Override public RangerGroup getGroupByName(String groupName) { return rangerRestClient.getGroupByName(groupName); }  @Override void initialize(AuthorizationConfiguration config); @Override RangerGroup getGroupByName(String groupName); @Override List<HadoopAuthorizationGroup> getAllGroups(); @Override void createOrUpdateReadOnlyHivePolicy(String categoryName, String feedName, List<String> securityGroupNames, String datebaseName, List<String> tableNames); @Override void createOrUpdateReadOnlyHdfsPolicy(String categoryName, String feedName, List<String> securityGroupNames, List<String> hdfsPaths); @Override void createReadOnlyHivePolicy(String categoryName, String feedName, List<String> securityGroupNames, String databaseName, List<String> tableNames); @Override void createReadOnlyHdfsPolicy(String categoryName, String feedName, List<String> securityGroupNames, List<String> hdfsPaths); @Override void updateReadOnlyHivePolicy(String categoryName, String feedName, List<String> groups, String datebaseNames, List<String> tableNames); @Override void updateReadOnlyHdfsPolicy(String categoryName, String feedName, List<String> groups, List<String> hdfsPaths); @Override /** * If no security policy exists it will be created. If a policy exists it will be updated */ void updateSecurityGroupsForAllPolicies(String categoryName, String feedName, List<String> securityGroupNames, Map<String, Object> feedProperties); @Override void deleteHivePolicy(String categoryName, String feedName); @Override void deleteHdfsPolicy(String categoryName, String feedName, List<String> hdfsPaths); @Override String getType();  }### Answer:
@Test @Ignore public void getGetGroupByName() { RangerGroup rangerGroup = (RangerGroup) rangerAuthorizationService.getGroupByName("root"); assertNotNull(rangerGroup); }