What is the Guava equivalent of Scala's flatMap?

Question

Looking through https://github.com/google/guava/wiki/FunctionalExplained I see operations like transform, which will transform a list but keep the same cardinality. How can I perform a transform that results in a different cardinality? e.g. (pseudocode) List(1,2,3).transform(i => List(i, i)) -> List(1,1,2,2,3,3)

Answer 1

As of version 13, there is transformAndConcat on FluentIterable.

Answer 2

I don't think there's a direct translation, but transform followed by concat should be equivalent.