private void assertDeleted(String blobId) throws Exception {
    try {
      router.getBlob(blobId, new GetBlobOptionsBuilder().build()).get(AWAIT_TIMEOUT_MS, TimeUnit.MILLISECONDS);
      fail("blob " + blobId + " Should be deleted");
    } catch (ExecutionException e) {
      assertTrue(e.getCause() instanceof RouterException);
      assertEquals(RouterErrorCode.BlobDeleted, ((RouterException) e.getCause()).getErrorCode());
    }
  }
Generates {@link Properties} that includes initial configuration.
@param parallelism undelete request parallelism.
@return Properties
ambry-router/src/test/java/com/github/ambry/router/UndeleteManagerTest.java