syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // be scheduled to emit `StorageDead` on the guard's failure/break branches.
context_before:                     // The arm binding will be by reference, so eagerly create it now. Drops must
context_after:                     let value_for_arm = self.storage_live_binding(