class_docstr: :examples:
  
  >>> from h2o.estimators.coxph import H2OCoxProportionalHazardsEstimator
  >>> heart = h2o.import_file("http://s3.amazonaws.com/h2o-public-test-data/smalldata/coxph_test/heart.csv")
  >>> coxph = H2OCoxProportionalHazardsEstimator(start_column="start",
  ...                                            stop_column="stop",
  ...                                            ties="breslow")
  >>> coxph.train(x="age", y="event", training_frame=heart)
  >>> coxph
code: def _str_items_custom(self):
      return [
          "Concordance score: {}".format(self.concordance()),
          "Concordant count: {}".format(self.concordant()),
          "Tied cout: {}".format(self.tied_y()),
      ]
  
file_path: h2o-3/h2o-py/h2o/model/metrics/coxph.py
imports: import h2o
  from h2o.model import MetricsBase
label_desc: Use image node_id 1 for calling the H2ORegressionCoxPHModelMetrics obj's underlying member method code with example usage: obj._str_items_custom() and returns: list