#include <Standard.hxx>
#include <Handle_StepBasic_DerivedUnit.hxx>
#include <Handle_StepBasic_HArray1OfDerivedUnitElement.hxx>
#include <MMgt_TShared.hxx>
#include <Standard_Integer.hxx>
#include <Handle_StepBasic_DerivedUnitElement.hxx>