syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // Avoid generating another `BasicBlock` when we only have one sub branch.
context_before:             let [sub_branch] = branch.sub_branches.try_into().unwrap();
context_after:             self.bind_and_guard_matched_candidate(