'Extract closed captioning text.
Returns:
str: closed captions Text.'

@property
def closed_captions_text(self):

    self.wait_for_closed_captions()
    closed_captions_selector = self.get_element_selector(CSS_CLASS_NAMES['closed_captions'])
    subs = self.q(css=closed_captions_selector).html
    return '    '.join(subs)
