How to make all types of merged assemblies internal?

frankrem

I am using the following construct in my saproj:

<Assembly AssemblyName="MyCompany.LibA, Culture=neutral, PublicKeyToken=null">
    <Merging Merge="1">
        <Pruning>
            <Exclusion />
        </Pruning>
        <Obfuscation Obfuscate="1">
            <Exclusion />
        </Obfuscation>
        <ControlFlow Obfuscate="1" />
        <MemberRefsProxy />
        <ResourcesCompression />
    </Merging>
    <Embedding Compress="1" Encrypt="1" />
</Assembly>

How do I make all public types of MyCompany.LibA internal after merging?