set_logical_switch_config <peer> <logical switch> <key> <value>
        eg. set_logical_switch_config sw1 running LogicalSwitch7 \
lost-connection-behavior failStandaloneMode

def do_set_logical_switch_config(self, line):
        """set_logical_switch_config <peer> <logical switch> <key> <value>
        eg. set_logical_switch_config sw1 running LogicalSwitch7 \
lost-connection-behavior failStandaloneMode
        """

        def f(p, args):
            try:
                target, lsw, key, value = args
            except:
                print("argument error")
                return

            # get switch id
            o = p.get_config(target)
            capable_switch_id = o.id

            try:
                capable_switch = ofc.OFCapableSwitchType(
                    id=capable_switch_id,
                    logical_switches=ofc.OFCapableSwitchLogicalSwitchesType(
                        switch=[ofc.OFLogicalSwitchType(
                            id=lsw,
                            **{key: value}
                        )]
                    )
                )
            except TypeError:
                print("argument error")
                return
            try:
                p.edit_config(target, capable_switch)
            except Exception as e:
                print(e)

        self._request(line, f)