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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 get_summary(self):
 """ Returns a dict of source name and sensors with their values """

        graph_vector_summary = OrderedDict()
        graph_vector_summary[self.get_source_name()] = (
            '[' + self.measurement_unit + ']')
        graph_vector_summary.update(self.get_sensors_summary())
        return graph_vector_summary