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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 allow_blank(self, form, name):
 """ Allow blank determines if the form might be completely empty. If it's empty it will result in a None as the saved value for the ForeignKey. """

        if self.blank is not None:
            return self.blank
        model = form._meta.model
        field = model._meta.get_field(self.get_field_name(form, name))
        return field.blank