syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"expn_hash_to_expn_id:"}]}
source_snippet:     expn_hash_to_expn_id: UnhashMap<ExpnHash, ExpnId>,
context_before:     foreign_expn_hashes: FxHashMap<ExpnId, ExpnHash>,
context_after:     syntax_context_data: Vec<SyntaxContextData>,