do {
    // The first argument is always the executable, drop it
    let arguments = Array(CommandLine.arguments.dropFirst())

    let parser = ArgumentParser(usage: "<options>", overview: "A description")
    let nameOption = parser.add(option: "--name", shortName: "-n", kind: String.self, usage: "A name")

    let parsedArguments = try parser.parse(arguments)
    let name = parsedArguments.get(nameOption)
    print(name)
} catch {
    // handle parsing error
}

/// Create an argument parser.
///
/// - Parameters:
///   - commandName: If provided, this will be substitued in "usage" line of the generated usage text.
///   Otherwise, first command line argument will be used.
///   - usage: The "usage" line of the generated usage text.
///   - overview: The "overview" line of the generated usage text.
///   - seeAlso: The "see also" line of generated usage text.
///
init(commandName: String? = nil, usage: String, overview: String, seeAlso: String? = nil)

/// Add an argument to a parser.
///
/// - Parameters:
///   - option: The name of the argument, for example "--name".
///   - shortName: The shortened name of the argument, e.g. "-n".
///   - kind: The concrete type of the argument.
///   - usage: The description of the argument.
///
func add<T: ArgumentKind>(option: String, shortName: String? = nil, kind: T.Type, usage: String? = nil)

/// Parses the provided array and returns the result.
///
func parse(_ arguments: [String] = []) throws -> Result

/// Get an option argument's value from the results.
///
/// Since the options are optional, their result may or may not be present.
///
func get<T>(_ argument: OptionArgument<T>) -> T?