WhateverUseCase.swift

class WhateverUseCase {
    ...
    let store: Store // I don't need specify any type

    func performOperation() {
        /// Car
        store.fetch(Car.self, with: [.color(.red), .year(Date())])
            .success { cars in
                // Do logic
            }
            .error { error in
                // Propagate
            }
        let mazda = Mazda(color: .red, year: "2017".toDate()!)
        store.save(mazda)
            .success { print("Yay") }
            .error { print($0) }
        store.delete(mazda)
            .success { print("Yay") }
            .error { print($0) }
        /// Person
        store.fetch(Person.self, with: [.eye(.blue), .firstName("Muiz")])
            .success { persons in
                // Do logic
            }
            .error { error in
                // Propagate
            }
        let muiz = Person(eye: .blue, firstName: "Muiz")
        store.save(muiz)
            .success { print("Yay") }
            .error { print($0) }
        store.delete(muiz)
            .success { print("Yay") }
            .error { print($0) }
    }
    ...
}