{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"ObligationCauseCode::WhereClauseInExpr(def_id,"}]}
                        ObligationCauseCode::WhereClauseInExpr(def_id, span, _, _)
                    Some(
                        | ObligationCauseCode::WhereClause(def_id, span),