syntax_data: {"ast_node_type":"variable","tokens":[{"end":27,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let otherwise =
context_before:             let or_start = leaf_candidate.pre_binding_block.unwrap();
context_after:                 self.match_candidates(span, scrutinee_span, or_start, &mut [leaf_candidate]);