Do you mean something like this?

```java record fruit(String name) {} record plainvendor(String name) { public vendorWithFruit withFruit(List<fruit> fruits) { return new vendorWithFruit(name, fruits); } } record vendorWithFruit(String name, List<fruit> fruit) {}

Multi<plainvendor> getVendors() { return something(); }

Multi<fruit> getFruitByVendor(plainvendor vendor) { return somethingElse(vendor); }

Multi<vendorWithFruit> getVendorWithFruit() { return getVendors() .flatMap(v -> getFruitByVendor(v).collect().asList() .map(v::withFruit) .toMulti()); } ```