What the hell did I just write?

RemoveSlotsCommand.java

    @Override
    public void accept(CommandDispatcher<ServerCommandSource> commandDispatcher) {
        commandDispatcher.register(ServerCommandManager.literal(getName()).requires(
                (commandSource) -> commandSource.hasPermissionLevel(2))
                .then(ServerCommandManager.literal("all")
                    .executes((commandContext) -> removePlayersSlots(commandContext.getSource(), null,
                            InventoryUtils.MAX_SLOTS))
                    .then(ServerCommandManager.argument("targets", GameProfileArgumentType.create())
                            .executes((commandContext) -> removePlayersSlots(commandContext.getSource(),
                                    GameProfileArgumentType.getProfilesArgument(commandContext, "targets"),
                                    InventoryUtils.MAX_SLOTS))))
                .then(ServerCommandManager.argument("amount", IntegerArgumentType.integer(1, InventoryUtils.MAX_SLOTS))
                    .executes((commandContext) -> removePlayersSlots(commandContext.getSource(), null,
                            IntegerArgumentType.getInteger(commandContext, "amount")))
                    .then(ServerCommandManager.argument("targets", GameProfileArgumentType.create())
                            .executes((commandContext) -> removePlayersSlots(commandContext.getSource(),
                                    GameProfileArgumentType.getProfilesArgument(commandContext, "targets"),
                                    IntegerArgumentType.getInteger(commandContext, "amount")))))
        );
    }