implement enumerable OutlineItemFlag

PyPDF2/generic.py

@@ -38,6 +38,7 @@
 import warnings
 from io import BytesIO
 from typing import Any, Callable, Dict, List, Optional, Tuple, Union, cast
+from enum import IntFlag
 
 from ._codecs import ( # noqa: rev_encoding
  _pdfdoc_encoding,
@@ -1702,6 +1703,9 @@ def additionalActions(self) -> Optional[DictionaryObject]: # pragma: no cover
  deprecate_with_replacement("additionalActions", "additional_actions")
  return self.additional_actions
 
+class OutlineItemFlag(IntFlag):
+ italic = 1
+ bold = 2
 
 class Destination(TreeObject):
  """
@@ -1856,9 +1860,9 @@ def color(self) -> Optional[tuple]:
  return self.get("/C", None)
 
  @property
- def fmt(self) -> Optional[int]:
+ def fmt(self) -> Optional[OutlineItemFlag]:
  """Read-only property accessing the font type. 1=italic, 2=bold, 3=both"""
- return self.get("/F", None)
+ return self.get("/F", 0)
 
 
 class Bookmark(Destination):