@Override
    public String toString() {
        return "Sidecar{name='%s', image='%s', quota=%s, volumeMounts={%s}, envs=[%s], command=[%s]}"
                .formatted(
                        name,
                        image,
                        quota,
                        volumeMounts.stream().map("'%s'"::formatted).collect(Collectors.joining(", ")),
                        envs.entrySet().stream()
                                .map(entry -> "%s='%s'".formatted(entry.getKey(), entry.getValue()))
                                .collect(Collectors.joining(", ")),
                        command.stream().map("'%s'"::formatted).collect(Collectors.joining(", ")));
    }
Defines properties for sidecar flag.

@author glabashnik
flags/src/main/java/com/yahoo/vespa/flags/custom/Sidecar.java