code: def GetOptionString(self, section, option):
      
      if self.config.has_option(section, option):
        return self.config.get(section, option)
      else:
        return None
docs: Get the value of an option in the config file.
  
      Args:
        section: string, the section of the config file to check.
        option: string, the option to retrieve the value of.
  
      Returns:
        string, the value of the option or None if the option doesn't exist.