@Override
  public boolean supportsPath(String path) {
    return path != null && path.startsWith(Constants.HEADER_COS);
  }
@Test
  public void supportsPath() {
    Assert.assertTrue(mFactory.supportsPath(mCosPath));
    assertFalse(mFactory.supportsPath(null));
    assertFalse(mFactory.supportsPath("Invalid_Path"));
    assertFalse(mFactory.supportsPath("hdfs://test-bucket/path"));
  }