code: def p_information_duration_speed(self, p):
          'information : duration AT speed'
          logger.debug('information = duration %s at speed %s', p[1], p[3])
          p[0] = p[3].for_duration(p[1]f p_information_duration_speed(self, p):
          'information : duration AT speed'
          logger.debug('information = duration %s at speed %s', p[1], p[3])
          p[0] = p[3].for_duration(p[1])
docs: information : duration AT speed