class_docstr: CSV record parser
class_docstr_tok: ["CSV","record","parser"]
code: def delimiter(self):
      # default delimiter = ','
      return str(self._configuration.get("delimiter", ","))
  
imports: from abc import ABCMeta, abstractmethod
  from copy import deepcopy
  import csv
  from fnmatch import fnmatch
  import json
  import logging
  import re
  import io
  import jmespath
  from streamalert.shared.logger import get_logger
label_desc: Use image node_id 1 for calling the CSVParser obj's underlying member method code with example usage: obj.delimiter() and returns: str