syntax_data: {"ast_node_type":"variable","tokens":[{"end":100,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let mut results = IndexVec::from_fn_n(|_| self.bottom_value(body), body.basic_blocks.len());
context_before:     {
context_after:         self.initialize_start_block(body, &mut results[mir::START_BLOCK]);