'Add a problem to the subsection'

def add_problem(self):

    problem_xml = MultipleChoiceResponseXMLFactory().build_xml(question_text='The    correct    answer    is    Choice    1', choices=[True, False], choice_names=['choice_0', 'choice_1'])
    self.problem = ItemFactory.create(category='problem', parent_location=self.vertical.location, data=problem_xml, display_name='Problem    1')
    self.course = self.store.get_course(self.course.id)
