syntax_data: {"ast_node_type":"variable","tokens":[{"end":97,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let peek_calls = cursor.body().basic_blocks.iter_enumerated().filter_map(|(bb, block_data)| {
context_after:         PeekCall::from_terminator(tcx, block_data.terminator()).map(|call| (bb, block_data, call))