// Container.swift

public struct SomeRawRepresentable: RawRepresentable, Decodable {
    
    public let rawValue: String
    
    public init(rawValue: String) { self.rawValue = rawValue }
}

public struct Container: Decodable {
    public let identifier: SomeRawRepresentable
}

// NeverCalled.swift
private func neverCalled(someRawRepresentable: SomeRawRepresentable) {
    print(someRawRepresentable.rawValue)
}

func testDecode() {
    
    let json = """
        {
            "Container": {
                "identifier": "IDENTIFIER",
            }
        }
        """.data(using: .utf8)!
    
    let decoder = JSONDecoder()
    
    do {
        let container = try decoder.decode([String : Container].self, from: json)["Container"]!
        
        XCTAssertEqual(container, "IDENTIFIER")
        
    } catch {
        // This path is executed only when WMO is enabled
        XCTFail("Couldn't decode:\n\n\(error)\n\n")
    }
}