def METHOD_NAME(self, total_length, object_name):
    """
    Metadata settings for the object. This method called before uploading
    object
    :param total_length: Total length of object.
    :param object_name: Object name to be showed.
    """
    self.total_length = total_length
    self.object_name = object_name
    self.prefix = self.object_name + ': ' if self.object_name else ''