syntax_data: {"ast_node_type":"variable","tokens":[{"end":55,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let source_info = SourceInfo::outermost(body.span);
context_before: fn insert_term_block<'tcx>(body: &mut Body<'tcx>, kind: TerminatorKind<'tcx>) -> BasicBlock {
context_after:     body.basic_blocks_mut().push(BasicBlockData::new(Some(Terminator { source_info, kind }), false))