1 files changed, 11 insertions, 2 deletions
diff --git a/src/ee/xml/bom_file_utils.py b/src/ee/xml/bom_file_utils.py
index f09a3dd..15f99b2 100644
--- a/src/ee/xml/bom_file_utils.py
+++ b/src/ee/xml/bom_file_utils.py
@@ -1,14 +1,23 @@
 from typing import List, Optional
 
-from ee.xml import bomFile
+from ee.xml import bomFile, indexFile
 
 __all__ = [
-    "part_numbers",
+    "find_root_tag",
     "find_pn",
     "find_dpn",
 ]
 
 
+def find_root_tag(root):
+    tag = next((tag for tag, klass in bomFile.GDSClassesMapping.items() if klass == type(root)), None)
+
+    if tag is not None:
+        return tag
+
+    return next((tag for tag, klass in indexFile.GDSClassesMapping.items() if klass == type(root)))
+
+
 def part_numbers(part: bomFile.Part) -> List[bomFile.PartNumber]:
     pns = part.part_numbersProp  # type: bomFile.PartNumberList