syntax_data: {"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let TerminatorKind::Yield { .. } = data.terminator().kind {
context_before:     for (block, data) in body.basic_blocks.iter_enumerated() {
context_after:             let loc = Location { block, statement_index: data.statements.len() };