Re: [PR] Add documentation for Wait.On and WaitOn transforms [beam]

[via GitHub]

tvalentyn commented on PR #35647:
URL: https://github.com/apache/beam/pull/35647#issuecomment-3113335491

   (the fix was to spit the processing and logging into two statements, since 
logging doesn't return an element)
    
   ```
   
       PCollection<String> processed = main.apply("WaitOnSignal", 
Wait.on(signal))
           .apply("ProcessAfterWait", 
MapElements.into(TypeDescriptors.strings())
               .via(item -> "Processed: " + item));
   
       processed.apply("LogResults", ParDo.of(new DoFn<String, Void>() {
           @ProcessElement
           public void processElement(ProcessContext c) {
               System.out.println(c.element());
           }
       }));
   ```


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