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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 set_controller(self, controllers):
 """ Sets the OpenFlow controller address. This method is corresponding to the following ovs-vsctl command:: """

        command = ovs_vsctl.VSCtlCommand('set-controller', [self.br_name])
        command.args.extend(controllers)
        self.run_command([command])