docstr: Return boolean representation of value found at key
  
  :param key: key to use (dot separated). E.g., a.b.c
  :type key: basestring
  :param default: default value if key not found
  :type default: bool
  :return: boolean value
  :type return: bool
docstr_tok: ["Return","boolean","representation","of","value","found","at","key",":","param","key",":","key","to","use","(","dot","separated",")",".","E.g.",",","a.b.c",":","type","key",":","basestring",":","param","default",":","default","value","if","key","not","found",":","type","default",":","bool",":","return",":","boolean","value",":","type","return",":","bool"]
code: def get_bool(self, key, default=UndefinedKey):
      """Return boolean representation of value found at key
  
      :param key: key to use (dot separated). E.g., a.b.c
      :type key: basestring
      :param default: default value if key not found
      :type default: bool
      :return: boolean value
      :type return: bool
      """
  
      # String conversions as per API-recommendations:
      # https://github.com/typesafehub/config/blob/master/HOCON.md#automatic-type-conversions
      bool_conversions = {
          None: None,
          "true": True,
          "yes": True,
          "on": True,
          "false": False,
          "no": False,
          "off": False,
      }
      string_value = self.get_string(key, default)
      if string_value is not None:
          string_value = string_value.lower()
      try:
          return bool_conversions[string_value]
      except KeyError:
          raise ConfigException(
              "{key} does not translate to a Boolean value".format(
                  key=key
              )
          )
  
imports: from collections import OrderedDict
  from pyparsing import lineno
  from pyparsing import col
  import re
  import copy
  from .exceptions import ConfigException, ConfigWrongTypeException, ConfigMissingException
label_desc: Use image node_id 13 for calling the ConfigTree obj's underlying member method code with example usage: obj.get_bool(key, default) and returns: bool_conversions