    /// Customer’s state. String up to 32 characters.
    public var state: String?
    
    /// Create the optional payer options data holder.
    /// - Parameters:
    ///   - middleName: Customer’s middle name. String up to 32 characters.
    ///   - birthdate: Customer’s birthday. Format: yyyy-MM-dd, e.g. 1970-02-17.
    ///   - address2: The adjoining road or locality of the сustomer’s address. String up to 255 characters.
    ///   - state: Customer’s state. String up to 32 characters.
    public init(middleName: String? = nil, birthdate: Date? = nil, address2: String? = nil, state: String? = nil) {