public Either <RfcErrorInfo, int> GetTypeFieldCount(ITypeDescriptionHandle descriptionHandle)
{
Logger.IfSome(l => l.LogTrace("reading field count by type description handle", descriptionHandle));
var rc = NativeApi.GetTypeFieldCount(descriptionHandle as TypeDescriptionHandle, out var result, out var errorInfo);
return(ResultOrError(result, rc, errorInfo));
}