class_docstr: This helper class wraps the DatasetTemplates class
  - Initialized the DatasetTemplates for all existing template folder
  - Give access to each DatasetTemplates
  - Provides aggregated counts over all DatasetTemplates
class_docstr_tok: ["This","helper","class","wraps","the","DatasetTemplates","class","-","Initialized","the","DatasetTemplates","for","all","existing","template","folder","-","Give","access","to","each","DatasetTemplates","-","Provides","aggregated","counts","over","all","DatasetTemplates"]
code: def __len__(self) -> int:
      return len(self.datasets_templates)
  
imports: import logging
  import os
  import random
  import re
  import uuid
  from collections import Counter, defaultdict
  from shutil import rmtree
  from typing import Dict, List, Optional, Tuple
  import pandas
  import pkg_resources
  import yaml
  from jinja2 import BaseLoader, Environment, meta
  from ..constants import AUTOMM
label_desc: Use image node_id 3 for calling the TemplateCollection obj's underlying member method code with example usage: obj.__len__() and returns: len