'Requires:
line -- line to parse
tag -- type of field
Returns:
nothing
Logic:
Some fields have a series of tokens (cw<di<year______<nu<2003)
that must be parsed as attributes for the element.
Set the state to collect tokesn, and set the text string to
start an empty element with attributes.'

def __found_tag_with_tokens_func(self, line, tag):

    self.__state = 'collect_tokens'
    self.__text_string = ('mi<tg<empty-att_<%s' % tag)
