<dependency>
  <groupId>org.hamcrest</groupId>
  <artifactId>hamcrest-library</artifactId>
  <version>2.1</version>
</dependency>

implementation 'org.hamcrest:hamcrest-library:2.1'

implementation("org.hamcrest:hamcrest-library:2.1")

libraryDependencies += "org.hamcrest" % "hamcrest-library" % "2.1"

@Grapes(
  @Grab(group='org.hamcrest', module='hamcrest-library', version='2.1')
)

<dependency org="org.hamcrest" name="hamcrest-library" rev="2.1" />

[org.hamcrest/hamcrest-library "2.1"]

'org.hamcrest:hamcrest-library:jar:2.1'