{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":".new_source_file(std::path::PathBuf::from(\"empty.rs\").into(),"}]}
                    .new_source_file(std::path::PathBuf::from("empty.rs").into(), String::new());
                empty_source_map
                &empty_source_map