syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"foreign_expn_data:"}]}
source_snippet:     foreign_expn_data: FxHashMap<ExpnId, ExpnData>,
context_before:     /// maps, and fetch the information directly from the other crate's metadata like DefIds do.
context_after:     foreign_expn_hashes: FxHashMap<ExpnId, ExpnHash>,