…thState followup ### What changes were proposed in this pull request? This is a followup of #38013 which introduce an example for applyInPandasWithState. Address some comments on code style. Closes #38066 from chaoqin-li1123/example_followup. Authored-by: Chaoqin Li <chaoqin.li@databricks.com> Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
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