def _getSuitableClasses(self, data, imageDosHeader):
        """Returns the class which holds the suitable classes for the loaded file"""
        classes = None
        machine = IMAGE_FILE_MACHINE[c_ushort.from_buffer(data,imageDosHeader.header.e_lfanew+4).value]

        if machine == IMAGE_FILE_MACHINE.I386:
            classes = PE32
        elif machine == IMAGE_FILE_MACHINE.AMD64:
            classes = PE64

        return classes