ios – Firestore and Swift: Retrieving an array of paperwork from a group

I’ve two collections in Firestore:

The exercises assortment consists of a identify, a kind and an array of references to workouts within the Train assortment.
The exercises assortment seems like this:

My downside is that once I’m making an attempt to get the exercises within the Exercises assortment, I am doing it like this:

let workoutDocuments = strive await self.retailer.assortment("/exercises").getDocuments().workoutDocuments
                for workoutDocument in paperwork {
let workoutCodable =  workoutDocument.knowledge(as: WorkoutCodable.self)

// MARK: - WorkoutCodable
struct WorkoutCodable: Identifiable, Codable, Hashable {
    @DocumentID var id: String?
//    var workouts: [ExerciseCodable]
    var identify: String?
    var kind: WorkoutTypeCodable
}
}

If the workouts array declaration is commented, then all of it works tremendous. Nonetheless, if take away the touch upon the var workouts: [ExerciseCodable] then I’ve an issue:

Error getting the benchmark exercises: Swift.DecodingError.typeMismatch(Swift.Dictionary<Swift.String, Any>, Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "exercises", intValue: nil), _JSONKey(stringValue: "Index 0", intValue: 0)], debugDescription: "Anticipated to decode Dictionary<String, Any> however discovered FIRDocumentReference as an alternative.", underlyingError: nil))

How can I fetch all these workouts saved within the workouts array?

Thanks!