syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // Falsely branch to `next_candidate_start_block` before reaching pre_binding.
context_before:                     let source_info = self.source_info(leaf_candidate.extra_data.span);
context_after:                     let old_pre_binding = leaf_candidate.pre_binding_block.unwrap();