{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"dcx.emit_err(errors::AbiCustomSafeForeignFunction"}]}
                dcx.emit_err(errors::AbiCustomSafeForeignFunction { span: sig.span, safe_span });
                let safe_span = source_map.span_until_non_whitespace(safe_span.to(sig.span));
            }