Change URI to IRI after finding validation pattern

id.go

@@ -9,18 +9,18 @@ import (
 
 type ID struct {
 	*CommonAttributes
-	URI URI `xml:"uri"`
+	URI IRI `xml:"uri"`
 }
 
 func NewID() *ID {
-	return &ID{URI: URI(fmt.Sprint("urn:uuid:", uuid.New()))}
+	return &ID{URI: IRI(fmt.Sprint("urn:uuid:", uuid.New()))}
 }
 
 func (i *ID) Check() error {
 	if i.URI == "" {
 		return errors.New("uri element of id empty")
 	} else {
-		if !isValidURI(i.URI) {
+		if !isValidIRI(i.URI) {
 			return fmt.Errorf("uri element %v of id not correctly formatted", i.URI)
 		}
 	}