docs: def get_context(self, filename):
          """Get context."""
  
          if self.type == 'pptx':
              context = '{}: '.format(RE_SLIDE.search(filename).group(1))
          elif self.type == 'docx':
              context = '{}: '.format(RE_DOCS.match(filename).group(1))
          else:
              context = ''
          return context