@Override
      public int compare(Pair<String, String> p1, Pair<String, String> p2) {
        int firstComparison = p1.getFirst().compareTo(p2.getFirst());
        if (firstComparison != 0) {
          return firstComparison;
        } else {
          return p1.getSecond().compareTo(p2.getSecond());
        }
      }
A utility class to represent the response structure returned by List named blob.
ambry-frontend/src/integration-test/java/com/github/ambry/frontend/FrontendIntegrationTestBase.java