public virtual NewReference Alloc()
{
// Create a new PyObject whose type is a generated type that is
// implemented by the particular concrete ExtensionType subclass.
// The Python instance object is related to an instance of a
// particular concrete subclass with a hidden CLR gchandle.
BorrowedReference tp = TypeManager.GetTypeReference(GetType());
//int rc = (int)Util.ReadIntPtr(tp, TypeOffset.ob_refcnt);
//if (rc > 1050)
//{
// DebugUtil.Print("tp is: ", tp);
// DebugUtil.DumpType(tp);
//}
NewReference py = Runtime.PyType_GenericAlloc(tp, 0);
#if DEBUG
GetGCHandle(py.BorrowOrThrow(), tp, out var existing);
System.Diagnostics.Debug.Assert(existing == IntPtr.Zero);
#endif
SetupGc(py.Borrow(), tp);
return(py);
}