def execute(self, ns, vgs=None):
        if not vgs:
            vgs = lvm.get_vgs(ns)
        for vg in vgs:
            vg = str2vg(ns, vg)
            cmd = fcmd.NewTableCommand(title=vg.InstanceID)
            yield cmd
            for line in show.vg_show(ns, vg, self.app.config.human_friendly):
                yield line
Implementation of 'vg show' command.
dataset/ETHPy150Open openlmi/openlmi-scripts/commands/storage/lmi/scripts/storage/cmd/vg.py/VGShow.execute