syntax_data: {"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"folder.cx().reuse_or_mk_predicate(self,"}]}
source_snippet:         folder.cx().reuse_or_mk_predicate(self, new)
context_before:         let new = self.kind().fold_with(folder);
context_after:     }