class_docstr: Analyze results of machine learning experiments.
docstr: Return metric names.
docstr_tok: ["Return","metric","names","."]
code: def metric_names(self):
      """Return metric names."""
      return self._metric_names
  
imports: import itertools
  import numpy
  import pandas
  from scipy import stats
  from scipy.stats import ranksums, ttest_ind
  from sktime.benchmarking.base import BaseResults
  from sktime.exceptions import NotEvaluatedError
  from sktime.utils.validation._dependencies import _check_soft_dependencies
label_desc: Use image node_id 2 for calling the Evaluator obj's underlying member method code with example usage: obj.metric_names() and returns: self