syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // │scope           │              │
context_before:                     // │out of <expr>   │      └───────┬────────┘
context_after:                     // └────────┬───────┘      ┌───────▼────────┐