class_docstr: Datmo Logging singleton
  
  Good info https://fangpenlin.com/posts/2012/08/26/good-logging-practice-in-python/
code: def get_logfiles():
      return map(
          lambda f: os.path.join(DatmoLogger().logging_path, f),
          os.listdir(DatmoLogger().logging_path),
      )
  
file_path: datmo/datmo/core/util/logger.py
imports: import hashlib
  import logging
  import logging.handlers
  import os
  import tempfile
  import time
  from datmo.core.util.misc_functions import grep
label_desc: Use image node_id 4 for calling the DatmoLogger obj's underlying member method code with example usage: obj.get_logfiles() and returns: map