@Parameterized.Parameters
  public static List<Object[]> data() {
    return Arrays.asList(new Object[][]{{false, true}, {true, true}, {false, false}, {true, false}});
  }
Running for both no data doPrefetch and do data doPrefetch
@return an array with both {@code false} and {@code true}.
ambry-store/src/test/java/com/github/ambry/store/StoreMessageReadSetTest.java