syntax_data: {"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"\"hir-tree\""}]}
source_snippet:         "hir-tree" => HirTree,
context_before:         "hir,typed" => Hir(PpHirMode::Typed),
context_after:         "thir-tree" => ThirTree,