syntax_data: {"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"source_info,"}]}
source_snippet:         source_info,
context_before:     let discr_assign = Statement::new(
context_after:         StatementKind::Assign(Box::new((poll_discr_place, Rvalue::Discriminant(*poll_unit_place)))),