Rdoc

<dependency>
    <groupId>rubygems</groupId>
    <artifactId>rdoc</artifactId>
    <version>6.3.3</version>
</dependency>

compile group: 'rubygems', name: 'rdoc', version: '6.3.3'

compile 'rubygems:rdoc:6.3.3'

libraryDependencies += "rubygems" % "rdoc" % "6.3.3"

<dependency org="rubygems" name="rdoc" rev="6.3.3"/>

@Grapes(
            @Grab(group='rubygems', module='rdoc', version='6.3.3')
        )

[rubygems/rdoc "6.3.3"]

'rubygems:rdoc:jar:6.3.3'