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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 get_port_name_list(self):
 """ Gets a list of all ports on OVS instance. This method is corresponding to the following ovs-vsctl command:: $ ovs-vsctl list-ports <bridge> """

        command = ovs_vsctl.VSCtlCommand('list-ports', (self.br_name, ))
        self.run_command([command])
        return command.result