syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"Some(Arc::new(SourceMap::new(FilePathMapping::empty()))),"}]}
source_snippet:                 Some(Arc::new(SourceMap::new(FilePathMapping::empty()))),
context_before:                 Box::new(io::BufWriter::new(io::stderr())),
context_after:                 translator,