syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"Some(\"2\")"}]}
source_snippet:             Some("2") | Some("full") => *slot = DebugInfo::Full,
context_before:             Some("1") | Some("limited") => *slot = DebugInfo::Limited,
context_after:             _ => return false,