classpath 'com.android.tools.build:gradle:4.1.0' // used in subproject
    }
}

tasks.register('encode') {
    doLast {
        def byte[] encodedString = new Base64().encode('hello world\n'.getBytes())
        println new String(encodedString)
    }
}
----

And you can apply the globally declared dependencies in the subproject that needs it:

[source,subproject/build.gradle]
----
plugins {

	}
	for _, x := range p.Mapping {
		encodeMessage(b, 3, x)
	}
	for _, x := range p.Location {
		encodeMessage(b, 4, x)
	}
	for _, x := range p.Function {
		encodeMessage(b, 5, x)
	}
	encodeStrings(b, 6, p.stringTable)
	encodeInt64Opt(b, 7, p.dropFramesX)
	encodeInt64Opt(b, 8, p.keepFramesX)
	encodeInt64Opt(b, 9, p.TimeNanos)
	encodeInt64Opt(b, 10, p.DurationNanos)

	}
	for _, x := range p.Mapping {
		encodeMessage(b, 3, x)
	}
	for _, x := range p.Location {
		encodeMessage(b, 4, x)
	}
	for _, x := range p.Function {
		encodeMessage(b, 5, x)
	}
	encodeStrings(b, 6, p.stringTable)
	encodeInt64Opt(b, 7, p.dropFramesX)
	encodeInt64Opt(b, 8, p.keepFramesX)
	encodeInt64Opt(b, 9, p.TimeNanos)
	encodeInt64Opt(b, 10, p.DurationNanos)