2060     def revbranchcache(self):

  2060     def revbranchcache(self):

  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 branchtip(self, branch, ignoremissing=False):

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

  2066         """return the tip node for a given branch

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

  2067 

  2070 

  2068         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.

  2069         This is helpful for callers that only expect None for a missing branch

  2072         This is helpful for callers that only expect None for a missing branch