Fails to create Indexed subfields when indexing reference fields

[raphaeldelio]

Reported originally by Stanislav on Stackoverflow

Reproduced locally by me using version 1.0.4

Description of the problem:
When a document references another document object and also expects this document to be indexed, the annotation processor fails to index the subfields of the referenced class.

The example above should create the metafield: Vehicle$.OWNER_NAME which it fails to do.

    @Document
    class Vehicle {
        @Id
        private String id;

        @Searchable
        private String model;

        @Reference
        @Indexed
        private Owner owner;

        // Constructors, getters, and setters...
    }
    
    @Document
    class Owner{
        @Id
        private String id;

        @Searchable
        private String name;

        // Constructors, getters, and setters...
    }

Expected behavior:
Vehicle$.OWNER_NAME metafield should be generated.

As documented in link

[StanislavSerdiuk]

@bsbodden @raphaeldelio One more thing.

If we have some enum type in my @Document it doesn't generate field in metamodel.
We have to add @Searchable annotation. But for native type as String it generates as usual.

//NOTE: java:21, redis-om: 1.0.4, spring-boot: 3.4.2
@Document("user")
public class User {
    @Id
    public UUID id;

    @Searchable
    public String login;

    //@Searchable(noindex = true)
    public Role role;

    public String email;

    public static void foo() {
        var idF = User$.ID;
        var loginF = User$.LOGIN;
        var roleF = User$.ROLE; // <-- BAD: Compile Error
        var emailF = User$.EMAIL; // <-- GOOD
    }

    public enum Role {
        ADMIN, USER;
    }
}