<dependency>
  <groupId>rubygems</groupId>
  <artifactId>ruby-maven</artifactId>
  <version>3.3.8</version>
  <type>gem</type>
</dependency>

implementation 'rubygems:ruby-maven:3.3.8'

implementation("rubygems:ruby-maven:3.3.8")

libraryDependencies += "rubygems" % "ruby-maven" % "3.3.8"

@Grapes(
  @Grab(group='rubygems', module='ruby-maven', version='3.3.8')
)

<dependency org="rubygems" name="ruby-maven" rev="3.3.8" />

[rubygems/ruby-maven "3.3.8"]

'rubygems:ruby-maven:jar:3.3.8'