from: flink-scala
to: flink-java
evidence:
 - file: "flink-scala/src/main/java/org/apache/flink/api/scala/operators/ScalaAggregateOperator.java"
   contains "import org.apache.flink.api.java.aggregation.AggregationFunction;"

from: flink-scala
to: flink-java
evidence:
 - file: "flink-scala/src/main/java/org/apache/flink/api/scala/operators/ScalaCsvOutputFormat.java"
   contains "import org.apache.flink.api.java.io.CsvInputFormat;"