MSBuildWorkspace Get Embedded Resource Files

I'm trying to get out all embedded resource files from a solution using Roslyn and MSBuild Api.

private async Task<Document> CheckConstForLocalization(Document document, LocalDeclarationStatementSyntax localDeclaration,
    CancellationToken cancellationToken)
{
    foreach (var project in document.Project.Solution.Projects)
    {
        foreach (var sourceDoc in project.AdditionalDocuments)
        {
            if (false == sourceDoc.Name.EndsWith(".cs"))
            {
                Debug.WriteLine(sourceDoc.Name);
            }
        }

        foreach (var sourceDoc in project.Documents)
        {
            if (false == sourceDoc.Name.EndsWith(".cs"))
            {
                Debug.WriteLine(sourceDoc.Name);
            }
        }
    }

    var newRoot = await document.GetSyntaxRootAsync(cancellationToken);
    // Return document with transformed tree.
    return document.WithSyntaxRoot(newRoot);
}

When I modify my resource files to be AdditionFiles, I can get them through the project AdditionalDocuments. However I would like to be able to grab these with out doing so. The file does not appear in Documents or Additional Documents

How can I find Resx files without modifying their attributes?