private IAttribute CreateContractClassAttribute(string contractClassName)
{
ITypeElement type = TypeFactory.CreateTypeByCLRName(
typeof(ContractClassAttribute).FullName,
_provider.PsiModule, _currentFile.GetResolveContext()).GetTypeElement();
var expression = _factory.CreateExpressionAsIs(
string.Format("typeof({0})", contractClassName));
var attribute = _factory.CreateAttribute(type);
attribute.AddArgumentAfter(
_factory.CreateArgument(ParameterKind.VALUE, expression),
null);
return(attribute);
}