syntax_data: {"ast_node_type":"variable","tokens":[{"end":35,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let block = target.block();
context_before:     fn expected_state_at_target(&self, target: SeekTarget) -> DenseBitSet<usize> {
context_after:         let mut ret = self.bottom_value(self.body);