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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 power_on(env, identifier):
 """Power on a server."""


    mgr = SoftLayer.HardwareManager(env.client)
    hw_id = helpers.resolve_id(mgr.resolve_ids, identifier, 'hardware')
    env.client['Hardware_Server'].powerOn(id=hw_id)