//Constructors
        public EmbeddedFileConfigurationProvider(IConfigurationBuilder builder, EmbeddedFileConfigurationOptions options)
        {
            _builder = builder ?? throw new ArgumentNullException(nameof(builder));
            _options = options ?? throw new ArgumentNullException(nameof(options));
            _        = _options.ScanAssembly ?? throw new NullReferenceException(nameof(options.ScanAssembly));

            _fileProvider = new EmbeddedFileProvider(_options.ScanAssembly);
        }
 //Constructors
 public EmbeddedFileConfigurationSource(EmbeddedFileConfigurationOptions options)
 => _options = options ?? throw new ArgumentNullException(nameof(options));