### Question:
HdfsRepositoryFactory implements RepositoryFactory { public HdfsRepositoryFactory() { this(new Configuration()); } HdfsRepositoryFactory();  HdfsRepositoryFactory(Configuration config); @Override Repository newInstance(String name, String url); @Override Set<String> getSupportedScheme();  }### Answer:
@Test public void testHdfsRepositoryFactory() { HdfsRepositoryFactory factory = new HdfsRepositoryFactory(); factory.newInstance("hdfs", "hdfs: factory.newInstance("hdfs", "hdfs: factory.newInstance("hdfs", "hdfs: }