DiscordClient/DiscordDelete/Program.cs

using CommandLine;
using DiscordDelete;

CommandLine
    .Parser.Default.ParseArguments<DeleteOptions, ScanOptions>(args)
    .MapResult(
        (DeleteOptions opt) =>
        {
            return 0;
        },
        (ScanOptions opt) =>
        {
            return 0;
        },
        errs => 1
    );