syntax_data: {"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"StatementKind::Assign(box"}]}
source_snippet:             StatementKind::Assign(box (place, Rvalue::CopyForDeref(reffed))) => {
context_before:         match &stmt.kind {
context_after:                 let local = place.as_local().unwrap();