<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def getStats(self):
 """ Returns the GA4GH protocol representation of this read group's ReadStats. """

        stats = protocol.ReadStats()
        stats.aligned_read_count = self.getNumAlignedReads()
        stats.unaligned_read_count = self.getNumUnalignedReads()
        # TODO base_count requires iterating through all reads
        return stats