<dependency>
  <groupId>rubygems</groupId>
  <artifactId>ruby-maven-libs</artifactId>
  <version>3.3.3</version>
  <type>gem</type>
</dependency>

implementation 'rubygems:ruby-maven-libs:3.3.3'

implementation("rubygems:ruby-maven-libs:3.3.3")

libraryDependencies += "rubygems" % "ruby-maven-libs" % "3.3.3"

@Grapes(
  @Grab(group='rubygems', module='ruby-maven-libs', version='3.3.3')
)

<dependency org="rubygems" name="ruby-maven-libs" rev="3.3.3" />

[rubygems/ruby-maven-libs "3.3.3"]

'rubygems:ruby-maven-libs:jar:3.3.3'