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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _clones(self):
 """Yield all machines under this pool"""

        vbox = VirtualBox()
        machines = []
        for machine in vbox.machines:
            if machine.name == self.machine_name:
                continue
            if machine.name.startswith(self.machine_name):
                machines.append(machine)
        return machines