Github user jkbradley commented on a diff in the pull request: https://github.com/apache/spark/pull/18742#discussion_r131288351 --- Diff: python/pyspark/ml/util.py --- @@ -283,3 +353,143 @@ def numFeatures(self): Returns the number of features the model was trained on. If unknown, returns -1 """ return self._call_java("numFeatures") + + +@inherit_doc +class DefaultParamsWritable(MLWritable): + """ + Class for making simple Params types writable. Assumes that all parameters --- End diff -- Could you please merge the Scala doc into this to make this more detailed?
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