code: function (jvmObject) {
  
          this.logger = Logger.getLogger("ml.feature.IndexToString_js");
          if (!jvmObject) {
              jvmObject = new org.apache.spark.ml.feature.IndexToString();
          }
          PipelineStage.call(this, jvmObject);
  
      }
docs: @classdesc
  A {@link module:eclairjs/ml/Transformer} that maps a column of indices back to a new column of corresponding
  string values.
  The index-string mapping is either from the ML attributes of the input column,
  or from user-supplied labels (which take precedence over ML attributes).
  
  @see {@link module:eclairjs/ml/feature.StringIndexer} for converting strings into indices
  @class
  @extends module:eclairjs/ml.PipelineStage
  @memberof module:eclairjs/ml/feature