code: def add_qemu_path(self, instance):
          
          tmp_conf = {'qemu_path': self.old_top[instance]['qemupath']}
          if len(self.topology['conf']) == 0:
              self.topology['conf'].append(tmp_conf)
          else:
              self.topology['conf'][self.hv_id].update(tmp_conf)
docs: Add the qemu path to the hypervisor conf data
  
          :param instance: Hypervisor instance