<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def pfadd(self, key, value, *values):
 """Adds the specified elements to the specified HyperLogLog."""

        return self.execute(b'PFADD', key, value, *values)