code: func (v *Value) Description() string {
  	parts := make([]string, 0, len(v.Items))
  	for _, it := range v.Items {
  		parts = append(parts, it.descriptionToken())
  	}
  
  	return strings.Join(parts, ", ")
  }
docs: // Description returns a human-readable string describing the contents of this
  // value.