Github user tillrohrmann commented on the pull request:
https://github.com/apache/flink/pull/1098#issuecomment-138243780
It's not only about the order but also about the support signatures. Best
you take a look at the Java `DataStream` implementation to see what's supported.
The error is `error
file=/home/travis/build/apache/flink/flink-staging/flink-streaming/flink-streaming-scala/src/main/scala/org/apache/flink/streaming/api/scala/DataStream.scala
message=File line length exceeds 100 characters line=721`. If you run `mvn
clean verify` locally, you will spot these issues without Travis.
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