<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def power_on(self):
 """Power on the box."""

        payload = amt.wsman.power_state_request(self.uri, "on")
        return self.post(payload, CIM_PowerManagementService)