syntax_data: {"ast_node_type":"variable","tokens":[{"end":65,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let Some(resolved) = place_builder.resolve_upvar(cx) {
context_before:         // FIXME(oli-obk): can we use this to simplify slice/array pattern hacks?
context_after:             place_builder = resolved;