syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"`hir`"}]}
source_snippet:         `hir` (the HIR), `hir,identified`,
context_before:         `ast-tree,expanded` (raw AST after expansion),
context_after:         `hir,typed` (HIR with types for each node),