syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"assert!(last_otherwise.is_some());"}]}
source_snippet:         assert!(last_otherwise.is_some());
context_before:         candidate.pre_binding_block = Some(shared_pre_binding_block);
context_after:         candidate.otherwise_block = last_otherwise;