syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"PathBuf::from(\"blork.rs\").into(),"}]}
source_snippet:         PathBuf::from("blork.rs").into(),
context_before:     sm.new_source_file(
context_after:         "fir€st €€€€ line.\nsecond line".to_string(),