+ /**
+ * Find the given tag by its hierarchical IDs.
+ * <p>
+ * I.E., it will take the tag A, subtag B, subsubtag C...
+ *
+ * @param ids
+ * the IDs to look for
+ *
+ * @return the appropriate tag fully filled, or NULL if not found
+ *
+ * @throws IOException
+ * in case of I/O error
+ */
+ public SearchableTag getTag(Integer... ids) throws IOException {
+ SearchableTag tag = null;
+ List<SearchableTag> tags = getTags();
+
+ for (Integer tagIndex : ids) {
+ // ! 1-based index !
+ if (tagIndex == null || tags == null || tagIndex <= 0
+ || tagIndex > tags.size()) {
+ return null;
+ }
+
+ tag = tags.get(tagIndex - 1);
+ fillTag(tag);
+ tags = tag.getChildren();
+ }
+
+ return tag;
+ }
+