syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"self.typeck_results.fru_field_types()[expr.hir_id]"}]}
source_snippet:                                                 self.typeck_results.fru_field_types()[expr.hir_id]
context_before:                                             AdtExprBase::DefaultFields(
context_after:                                                     .iter()