{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"self.dcx().emit_err(FnPointerCannotBeAsync"}]}
                                        self.dcx().emit_err(FnPointerCannotBeAsync {
                                    FrontMatterParsingMode::FunctionPtrType => {
                                            span: self.token.span,