95                 key=lambda (branch, release): self._release_key(release))
99                 self._release_key(self._next_build_number_release(release))
100                 for (branch, release) in self._sorted_branchpoint_list]
103     def _next_build_number_release(self, release):  argument
116         release_components = release.split('.')
121             raise ReleaseError('invalid release number: %s' % release)
129     def _release_key(self, release):  argument
144         release_components = release.split('.')
148             raise ReleaseError('invalid release number: %s' % release)
155         return [branch for (branch, release) in self._sorted_branchpoint_list]
158     def get_branch(self, release):  argument
161                                self._release_key(release))