code: def extract_abbreviations(fulltext):
      
      acronyms = {}
      for k, v in get_acronyms(fulltext).items():
          acronyms[KeywordToken(k, type='acronym')] = v
      return acronyms
docs: Extract acronyms from the fulltext.
  
      :param fulltext: utf-8 string
      :return: dictionary of matches in a formt {
            <keyword object>, [matched skw or ckw object, ....]
            }
            or empty {}