code: def set_multivar(self, section, option, value=''):
          '''
          This function is unique to the GitConfigParser. It will add another
          value for the option if it already exists, converting the option's
          value to a list if applicable.
  
          If "value" is a list, then any existing values for the specified
          section and option will be replaced with the list being passed.
          '''
          self._string_check(value, allow_list=True)
          if not section or section == self.DEFAULTSECT:
              sectdict = self._defaults
          else:
              try:
                  sectdict = self._sections[section]
              except KeyError:
                  raise NoSectionError(  # pylint: disable=undefined-variable
                      salt.utils.stringutils.to_str(section))
          key = self.optionxform(option)
          self._add_option(sectdict, key, valuef set_multivar(self, section, option, value=''):
          '''
          This function is unique to the GitConfigParser. It will add another
          value for the option if it already exists, converting the option's
          value to a list if applicable.
  
          If "value" is a list, then any existing values for the specified
          section and option will be replaced with the list being passed.
          '''
          self._string_check(value, allow_list=True)
          if not section or section == self.DEFAULTSECT:
              sectdict = self._defaults
          else:
              try:
                  sectdict = self._sections[section]
              except KeyError:
                  raise NoSectionError(  # pylint: disable=undefined-variable
                      salt.utils.stringutils.to_str(section))
          key = self.optionxform(option)
          self._add_option(sectdict, key, value)
docs: This function is unique to the GitConfigParser. It will add another
          value for the option if it already exists, converting the option's
          value to a list if applicable.
  
          If "value" is a list, then any existing values for the specified
          section and option will be replaced with the list being passed.