2. Define the controller

import Gravity
 
final class LandmarkBase: RemoteObjectDelegate {
    typealias Element = Landmark // Tells the RemoteObjectDelegate which type of object it is working with
 
    var store = try! Store<LandmarkBase>(reference: "landmarks") // Defines the store where the data will be stored and cached
 
    func pull(request: RemoteRequest<Landmark>) async throws -> [Landmark] {
        // Fetches the data from the database
    }
    
    func push(elements: [Landmark]) async throws {
        // Pushes the data to the database
    }
    
    static var shared = LandmarkBase() // Defines the shared instance of the controller
}