syntax_data: {"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let cause = FakeReadCause::ForGuardBinding;
context_before:                 let local_id = self.var_local_id(binding.var_id, RefWithinGuard);
context_after:                 self.cfg.push_fake_read(post_guard_block, guard_end, cause, Place::from(local_id));