W8132 Casting interface '%s' to Delphi-style class. Use 'System::interface_cast<%s>(intf)' instead (C++)

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This occurs when casting an interface to a delphi style class using the cast operator.

#include <System.hpp>
class TMyClass : public TObject
{
};
TMyClass* f(IUnknown* I)
{
  return dynamic_cast<TMyClass*>(I);  // <-- W8132
}