Github user medcv commented on a diff in the pull request:
https://github.com/apache/flink/pull/6000#discussion_r187802397
--- Diff: docs/dev/stream/operators/windows.md ---
@@ -730,9 +730,9 @@ input
/* ... */
-public class MyProcessWindowFunction implements
ProcessWindowFunction<Tuple<String, Long>, String, String, TimeWindow> {
+public static class MyProcessWindowFunction extends
ProcessWindowFunction<Tuple<String, Long>, String, String, TimeWindow> {
--- End diff --
make sense!
I see some `static` in this docs for other examples, we might need to make
them consistent
`private static class MyReduceFunction implements
ReduceFunction<SensorReading> {`
---
