syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"id,"}]}
source_snippet:                     id, ctxt.parent, ctxt.outer_expn, ctxt.outer_transparency,
context_before:                     "\n#{}: parent: {:?}, outer_mark: ({:?}, {:?})",
context_after:                 ));