<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-stream-testkit_2.12</artifactId>
<version>2.8.1</version>
</dependency>
@Grapes(
@Grab(group='com.typesafe.akka', module='akka-stream-testkit_2.12', version='2.8.1')
)