code: def uint8_3(self, name):
          
          self._assert_is_string(name)
          frame = self._next_frame()
          if len(frame) != 3:
              raise MessageParserError("Expected exacty 3 byte for 3 unit8 values")
          vals = unpack("BBB", frame)
          self.results.__dict__[name] = vals
          return self
docs: parse a tuple of 3 uint8 values