code: func (b *Uint64) UnmarshalGraphQL(input interface{}) error {
  	var err error
  	switch input := input.(type) {
  	case string:
  		return b.UnmarshalText([]byte(input))
  	case int32:
  		*b = Uint64(input)
  	default:
  		err = fmt.Errorf("Unexpected type for Long: %v", input)
  	}
  	return err
  }
docs: // UnmarshalGraphQL unmarshals the provided GraphQL query data.