2061         if not self._revbranchcache:

  2061         if not self._revbranchcache:

  2062             self._revbranchcache = branchmap.revbranchcache(self.unfiltered())

  2062             self._revbranchcache = branchmap.revbranchcache(self.unfiltered())

  2063         return self._revbranchcache

  2063         return self._revbranchcache

  2064 

  2064 

  2065     def register_changeset(self, rev, changelogrevision):

  2065     def register_changeset(self, rev, changelogrevision):

  2067 

  2067 

  2068     def branchtip(self, branch, ignoremissing=False):

  2068     def branchtip(self, branch, ignoremissing=False):

  2069         """return the tip node for a given branch

  2069         """return the tip node for a given branch

  2070 

  2070 

  2071         If ignoremissing is True, then this method will not raise an error.

  2071         If ignoremissing is True, then this method will not raise an error.