<dependency>
  <groupId>org.webjars.bowergithub.polymer</groupId>
  <artifactId>polymer</artifactId>
  <version>2.0.0-rc.9</version>
</dependency>

implementation 'org.webjars.bowergithub.polymer:polymer:2.0.0-rc.9'

implementation("org.webjars.bowergithub.polymer:polymer:2.0.0-rc.9")

libraryDependencies += "org.webjars.bowergithub.polymer" % "polymer" % "2.0.0-rc.9"

@Grapes(
  @Grab(group='org.webjars.bowergithub.polymer', module='polymer', version='2.0.0-rc.9')
)

<dependency org="org.webjars.bowergithub.polymer" name="polymer" rev="2.0.0-rc.9" />

[org.webjars.bowergithub.polymer/polymer "2.0.0-rc.9"]

'org.webjars.bowergithub.polymer:polymer:jar:2.0.0-rc.9'