Dumps the idle PC proposals (previously generated).

        :returns: list of idle PC proposal

def show_idle_pc_prop(self):
        """
        Dumps the idle PC proposals (previously generated).

        :returns: list of idle PC proposal
        """

        is_running = yield from self.is_running()
        if not is_running:
            # router is not running
            raise DynamipsError('Router "{name}" is not running'.format(name=self._name))

        proposals = yield from self._hypervisor.send('vm show_idle_pc_prop "{}" 0'.format(self._name))
        return proposals