<dependency>
  <groupId>com.github.marklister</groupId>
  <artifactId>base64_2.12</artifactId>
  <version>0.2.3</version>
</dependency>

implementation 'com.github.marklister:base64_2.12:0.2.3'

implementation("com.github.marklister:base64_2.12:0.2.3")

libraryDependencies += "com.github.marklister" % "base64_2.12" % "0.2.3"

@Grapes(
  @Grab(group='com.github.marklister', module='base64_2.12', version='0.2.3')
)

<dependency org="com.github.marklister" name="base64_2.12" rev="0.2.3" />

[com.github.marklister/base64_2.12 "0.2.3"]

'com.github.marklister:base64_2.12:jar:0.2.3'