def classes_to_clusters(self):
        """
        Return the array (ordered by cluster number) of minimum error class to cluster mappings.

        :return: the mappings
        :rtype: ndarray
        """
        array = javabridge.call(self.jobject, "getClassesToClusters", "()[I")
        if array is None:
            return None
        else:
            return javabridge.get_env().get_int_array_elements(array)
Return the array (ordered by cluster number) of minimum error class to cluster mappings.

        :return: the mappings
        :rtype: ndarray