Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/15843#discussion_r87555658
--- Diff: python/pyspark/ml/wrapper.py ---
@@ -180,6 +184,24 @@ def __get_class(clazz):
% stage_name)
return py_stage
+ def copy(self, extra=None):
+ """
+ Creates a copy of this instance with the same uid and some
+ extra params. This implementation first calls Params.copy and
+ then make a copy of the companion Java model with extra params.
--- End diff --
nit: Java model -> Java pipeline component.
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