{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":".or_else(||"}]}
                    .or_else(|| self.give_name_if_anonymous_region_appears_in_upvars(fr))
                    .or_else(|| self.give_name_if_anonymous_region_appears_in_arguments(fr))
                    .or_else(|| self.give_name_if_anonymous_region_appears_in_output(fr))