@Override
  public Pair<Template, List<PartialPath>> getAllPathsSetTemplate(String templateName) {
    return null;
  }
Generate the following tree: root.sg.d1.s1, root.sg.d1.s2(status) root.sg.d2.s1,
root.sg.d2.s2(status) root.sg.d2.a.s1, root.sg.d2.a.s2(status)

@return the root node of the generated schemaTree
iotdb-core/datanode/src/test/java/org/apache/iotdb/db/queryengine/plan/analyze/FakeSchemaFetcherImpl.java