def getMachine(self, machineName):
        """returns a machine object for a given machine
           Input:
              machineName - name of the box ex: SERVER.DOMAIN.COM
        """
        url = self._url + "/%s" % machineName
        return Machine(url=url,
                       securityHandler=self._securityHandler,
                       initialize=True,
                       proxy_url=self._proxy_url,
                       proxy_port=self._proxy_port)
returns a machine object for a given machine
           Input:
              machineName - name of the box ex: SERVER.DOMAIN.COM