--- a/mercurial/interfaces/dirstate.py	Thu Jan 26 15:50:36 2023 +0100
+++ b/mercurial/interfaces/dirstate.py	Mon Jan 30 19:21:34 2023 +0100
@@ -24,6 +24,9 @@
     # TODO: all these private methods and attributes should be made
     # public or removed from the interface.
     _ignore = interfaceutil.Attribute("""Matcher for ignored files.""")
+    is_changing_parents = interfaceutil.Attribute(
+        """True if parents changes in progress."""
+    )
 
     def _ignorefiles():
         """Return a list of files containing patterns to ignore."""
@@ -43,11 +46,6 @@
         released.
         """
 
-    def pendingparentchange():
-        """Returns true if the dirstate is in the middle of a set of changes
-        that modify the dirstate parent.
-        """
-
     def hasdir(d):
         pass