syntax_data: {"ast_node_type":"import","tokens":[{"end":61,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // FIXME: perhaps use `all_fields` and expose `FieldDef`.
context_after:     fn all_field_tys(self, interner: I) -> ty::EarlyBinder<I, impl IntoIterator<Item = I::Ty>>;