@Override
  public boolean[] createChildren(List<String> paths, List<T> records, int options) {
    throw new IllegalStateException("Not implemented");
  }
Constructor for {@code MockHelixPropertyStore}.
@param shouldFailSetOperation A binary indicator to specify if the {@link #set(String, Object, int)} operation
                              should fail.
@param shouldRemoveRecordBeforeNotify A boolean indicator to specify if the record should be removed before
                                       notifying listeners.
ambry-clustermap/src/test/java/com/github/ambry/clustermap/MockHelixPropertyStore.java