<dependency>
  <groupId>org.specs2</groupId>
  <artifactId>specs2-matcher_2.12</artifactId>
  <version>3.8.8</version>
</dependency>

implementation 'org.specs2:specs2-matcher_2.12:3.8.8'

implementation("org.specs2:specs2-matcher_2.12:3.8.8")

libraryDependencies += "org.specs2" % "specs2-matcher_2.12" % "3.8.8"

@Grapes(
  @Grab(group='org.specs2', module='specs2-matcher_2.12', version='3.8.8')
)

<dependency org="org.specs2" name="specs2-matcher_2.12" rev="3.8.8" />

[org.specs2/specs2-matcher_2.12 "3.8.8"]

'org.specs2:specs2-matcher_2.12:jar:3.8.8'