<dependency>
  <groupId>com.typesafe.akka</groupId>
  <artifactId>akka</artifactId>
  <version>2.2-M2</version>
  <type>pom</type>
</dependency>

implementation 'com.typesafe.akka:akka:2.2-M2'

implementation("com.typesafe.akka:akka:2.2-M2")

libraryDependencies += "com.typesafe.akka" % "akka" % "2.2-M2"

@Grapes(
  @Grab(group='com.typesafe.akka', module='akka', version='2.2-M2')
)

<dependency org="com.typesafe.akka" name="akka" rev="2.2-M2" />

[com.typesafe.akka/akka "2.2-M2"]

'com.typesafe.akka:akka:jar:2.2-M2'