func: host_memory_backend_can_be_deleted(UserCreatable *uc, Error **errp)
  
  {
  
      MemoryRegion *mr;
  
  
  
      mr = host_memory_backend_get_memory(MEMORY_BACKEND(uc), errp);
  
      if (memory_region_is_mapped(mr)) {
  
          return false;
  
      } else {
  
          return true;
  
      }
  
  }
  