public void MakePackageReferencePrivate(string packageName)
        {
            var xDocument      = _xmlHelper.LoadFromFile(FilePath);
            var projectElement = xDocument.Element("Project");

            if (projectElement == null)
            {
                throw new InvalidDataException($"Could not locate the 'Project' element in the file {FilePath}.");
            }

            var referenceGroups = projectElement.Elements("ItemGroup").Select(
                i => i.Elements("PackageReference").Where(
                    r =>
            {
                var attribute = r.Attribute("Include");
                return(attribute != null && attribute.Value.Equals(packageName, StringComparison.OrdinalIgnoreCase));
            })).Where(i => i.Any()).ToList();

            var packageReferences = referenceGroups.FirstOrDefault()?.ToList();

            if (packageReferences == null || packageReferences.Count < 1)
            {
                throw new InvalidDataException($"Could not find a package reference element for package '{packageName}' in file '{FilePath}'.");
            }

            if (referenceGroups.Count > 1 || packageReferences.Count > 1)
            {
                throw new InvalidDataException($"Found multiple package reference elements for package '{packageName}' in file '{FilePath}'.");
            }

            var packageReference = packageReferences.First();

            foreach (var privateAssetElement in packageReference.Elements("PrivateAssets"))
            {
                privateAssetElement.Remove();
            }

            packageReference.Add(new XElement("PrivateAssets", "All"));

            foreach (var excludeAssetsElement in packageReference.Elements("ExcludeAssets"))
            {
                excludeAssetsElement.Remove();
            }

            packageReference.Add(new XElement("ExcludeAssets", "contentFiles"));

            _xmlHelper.Save(xDocument, FilePath);
        }