code: func toValueTypeName(varName, name string, att *design.AttributeDefinition) string {
  	if att == nil {
  		return varName
  	}
  	if att.IsRequired(name) {
  		return varName
  	}
  	return "*" + varName
  }
docs: // toValueTypeName returns varName with `*` if it is not set as "required"