<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def dataset(self):
 """A Tablib Dataset representation of the RecordCollection."""

        # Create a new Tablib Dataset.
        data = tablib.Dataset()

        # If the RecordCollection is empty, just return the empty set
        # Check number of rows by typecasting to list
        if len(list(self)) == 0:
            return data

        # Set the column names as headers on Tablib Dataset.
        first = self[0]

        data.headers = first.keys()
        for row in self.all():
            row = _reduce_datetimes(row.values())
            data.append(row)

        return data