code: def find_and_parse_config(config, default_config='default.yaml'):
      
  
      def load_config(path):
          if os.path.isfile(path):
              with open(path, 'r') as f:
                  config_dict_ = yaml.load(f)
              return config_dict_
  
      config_path = find_file(config)
      default_path = find_file(default_config)
      config = load_config(config_path)
      default_config = load_config(default_path)
      if config is None and default_config is None:
          raise ValueError('Both config and default_config return None')
      if config is None:
          config_dict = default_config
      elif default_config is None:
          config_dict = config
      else:
          config_dict = merge(default_config, config)
  
      return config_dict
docs: Finds the service configuration file and parses it.
      Checks also a directory called default, to check for default configuration values,
      that will be overwritten by the actual configuration found on given path.