Content can also be empty

category.go

@@ -16,8 +16,10 @@ type Category struct {
 
 // NewCategory creates a new Category. It returns a *Category and an error.
 func NewCategory(term, content string) (*Category, error) {
-	if !isValidXML(content) {
-		return nil, fmt.Errorf("%v not valid XML", content)
+	if content != "" {
+		if !isValidXML(content) {
+			return nil, fmt.Errorf("%v not valid XML", content)
+		}
 	}
 
 	return &Category{Term: term, Content: content}, nil