syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// maps, and fetch the information directly from the other crate's metadata like DefIds do.
context_before:     /// Data and hash information from external crates. We may eventually want to remove these
context_after:     foreign_expn_data: FxHashMap<ExpnId, ExpnData>,