some new features

.venv/lib/python3.12/site-packages/openpyxl/workbook/function_group.py

@@ -0,0 +1,36 @@
+# Copyright (c) 2010-2024 openpyxl
+
+from openpyxl.descriptors.serialisable import Serialisable
+from openpyxl.descriptors import (
+    Sequence,
+    String,
+    Integer,
+)
+
+class FunctionGroup(Serialisable):
+
+    tagname = "functionGroup"
+
+    name = String()
+
+    def __init__(self,
+                 name=None,
+                ):
+        self.name = name
+
+
+class FunctionGroupList(Serialisable):
+
+    tagname = "functionGroups"
+
+    builtInGroupCount = Integer(allow_none=True)
+    functionGroup = Sequence(expected_type=FunctionGroup, allow_none=True)
+
+    __elements__ = ('functionGroup',)
+
+    def __init__(self,
+                 builtInGroupCount=16,
+                 functionGroup=(),
+                ):
+        self.builtInGroupCount = builtInGroupCount
+        self.functionGroup = functionGroup