Ffi

<dependency>
    <groupId>rubygems</groupId>
    <artifactId>ffi</artifactId>
    <version>1.15.4</version>
</dependency>

compile group: 'rubygems', name: 'ffi', version: '1.15.4'

compile 'rubygems:ffi:1.15.4'

libraryDependencies += "rubygems" % "ffi" % "1.15.4"

<dependency org="rubygems" name="ffi" rev="1.15.4"/>

@Grapes(
            @Grab(group='rubygems', module='ffi', version='1.15.4')
        )

[rubygems/ffi "1.15.4"]

'rubygems:ffi:jar:1.15.4'