syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         //   +-+----------------------------------+------------+
context_before:         // C | | (on entry)                       | {_0,_2,_3} |
context_after:         // D |0| StorageLive(_7)                  |            |