Encoding String to set Auth Token (LogIn Credentials Example) (Swift)

setAuthToken

open static func setAuthToken(_ email:String, password: String) -> [String: String] {
    let credentialData           = "\(email):\(password)".data(using: String.Encoding.utf8)!
    let base64Credentials        = credentialData.base64EncodedString(options: [])
    let token                    = "Basic \(base64Credentials)"
    return ["Authorization": token]
}