kotlin-stdlib / kotlin.streams / java.util.stream.Stream Extensions for java.util.stream.Stream JVM JRE8 1.2 asSequence Creates a Sequence instance that wraps the original stream iterating through its elements. fun < T > Stream < T > . asSequence ( ) : Sequence < T > JVM JRE8 1.2 toList Returns a List containing all elements produced by this stream. fun < T > Stream < T > . toList ( ) : List < T >