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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def input(self, request, tag):
 """ Add the wrapped form, as a subform, as a child of the given tag. """

        subform = self.parameter.form.asSubForm(self.parameter.name)
        subform.setFragmentParent(self)
        return tag[subform]