def fetch_format(token, property)
      if FORMATS.key?(token)
        FORMATS[token][property]
      else
        raise ArgumentError, "Unknown format token `:#{token}`"
      end
    end
def fetch_format(token, property)
      if FORMATS.key?(token)
        FORMATS[token][property]
      else
        raise ArgumentError, "Unknown format token `:#{token}`"
      end
    end
Find frames by token name

 @param [Symbol] token
   the name for the frames

 @return [Array, String]

 @api private