<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _zip(self) -> ArrayValue: """Zip the receiver into an array and return it."""

        res = list(self.before)
        res.reverse()
        res.append(self.value)
        res.extend(list(self.after))
        return ArrayValue(res, self.timestamp)