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You can add a regular spacer or a small spacer. Copy and paste one of the scripts into your Terminal.

Regular spacer script:

defaults write com.apple.dock persistent-apps -array-add '{"tile-type"="spacer-tile";}'; killall Dock

Small spacer script:

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* * * * * script.sh &> tmp_file || (echo Script failed with exit code $?; cat tmp_file); rm -f tmp_file > /dev/null

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[[ $IP =~ ^([1-9]?[0-9]\.|1[0-9]{2}\.|2[0-4][0-9]\.|25[0-5]\.){3}([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$|^([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}$ ]] || >&2 echo "Error: IP address '${IP}' is not valid" 

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Configure system to allow installation of armhf (32-bit) packages

sudo dpkg --add-architecture armhf
sudo apt-get update

Change [arch=arm64] to [arch=arm64,armhf] in all locations

sudo vi /etc/apt/sources.list.d/multistrap-debian.list

Install the cross compatibility libraries

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<?php

include("vendor/autoload.php");

class ClassWithStaticMethod {
    public static function staticMethod(): string
    {
        return "hello";
    }