File.WriteAllText(@"C:\ProgramData\Autodesk\Revit\Addins\2020\AG.SpecInfo.txt", Resources.AG_SpecInfo, Encoding.GetEncoding(1251));
doc.Application.SharedParametersFilename = @"c:\ProgramData\Autodesk\Revit\Addins\2020\AG.SpecInfo.txt";
var defFile = doc.Application.OpenSharedParameterFile();
var grouptype = defFile.Groups.get_Item("Тип") as DefinitionGroup;
IList<Definition> definitiontypelist = grouptype.Definitions.ToList();