Why it is excluding own pacakage name from Filter VPN?

[Saeed118]

for (final PackageInfo pi : installedPackages) {
if (isCancelled()) continue;
// exclude self package
if (pi.packageName.equals(MyApplication.getInstance().getPackageName())) {
continue;
}
boolean checked = packageFragment.mAllPackageInfoMap.containsKey(pi.packageName) ? packageFragment.mAllPackageInfoMap.get(pi.packageName) : false;
installedPackageMap.put(pi.packageName, checked);
}

I saw this code from SettingsActivity.
As you see, my application package is excluding...
I wanna include own application package, too because I want to integrate this tun proxy app to another app.
I checked C Code. It was using the Pipe communication.
Do you have any solution? or it is not possible?
I hope you let me know. thanks