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Ex. https://stackoverflow.com/questions/41427174/aggregate-java-objects-in-a-list-with-kafka-streams-dsl-windows, https://stackoverflow.com/questions/46365884/issue-with-arraylist-serde-in-kafka-streams-api 

For instance, aggregate grouped (by key) values together in a list to do other subsequent operations on the collection.

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First, as usually we need to specify our list serde using:

default.key/value.serde = org.apache.kafka.common.serialization.Serdes$ListSerde

Then, we need to cover those two configurations and here I'm proposing these two extra properties:

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