Merge NetworkSecurityConfig xml files in Manifest

In my application I set a network security configuration file with the following:

<network-security-config>
    <debug-overrides>
        <trust-anchors>
            <certificates src="user" />
        </trust-anchors>
    </debug-overrides>
</network-security-config>

I'm setting in my manifest this way:

  <application 
             (...)
              android:networkSecurityConfig="@xml/network_security_config">

Additionally, I'm adding a 3rd party lib which supplies its own network security config file with a set of domains

<network-security-config>
    <domain-config cleartextTrafficPermitted="true">
        <domain includeSubdomains="true">domainA</domain>
    </domain-config>
</network-security-config>

Which they are setting in my manifest this way:

  <application android:networkSecurityConfig="@xml/network_security_config">

The problem is that the manifest merge only works in manifest.xml file (afaik), therefore the netowrk-security-config file will always be the application file and not the merge between the app and 3rd party network-security-config files, is there a way to achieve something like this?

<network-security-config>
    <domain-config cleartextTrafficPermitted="true">
        <domain includeSubdomains="true">domainA</domain>
    </domain-config>
     <debug-overrides>
        <trust-anchors>
            <certificates src="user" />
        </trust-anchors>
    </debug-overrides>
</network-security-config>