code: def get_config(self):
      config = {"to_add": self.to_add + 1}
      config.update(super().get_config())
      return config
  
imports: import numpy
  import pytest
  import tensorflow
  from tensorflow.keras.metrics import MeanAbsoluteError, TrueNegatives, Metric
  from tensorflow_addons.testing.serialization import check_metric_serialization
label_desc: Use image node_id 3 for calling the MyOtherDummyMetric obj's underlying member method code with example usage: obj.get_config() and returns: config