public GeneralDocumentAttribute(GeneralField[] fields)
		{
			_fields = fields.Cast<Enum>().ToList();
		}
		public GeneralIndexAttribute(GeneralField[] fields)
		{
			var customFields = CustomFieldsProvider.Instance.GetCustomFields<GeneralField>();
			_fields = fields.Cast<Enum>().Concat(customFields).ToArray();
		}
		public GeneralIndexAttribute(GeneralField[] fields)
		{
			_fields = fields.Cast<Enum>().ToArray();
		}