<dependency>
  <groupId>io.github.zawn.retrofit2</groupId>
  <artifactId>java8</artifactId>
  <version>2.10.4</version>
</dependency>

implementation 'io.github.zawn.retrofit2:java8:2.10.4'

implementation("io.github.zawn.retrofit2:java8:2.10.4")

libraryDependencies += "io.github.zawn.retrofit2" % "java8" % "2.10.4"

@Grapes(
  @Grab(group='io.github.zawn.retrofit2', module='java8', version='2.10.4')
)

<dependency org="io.github.zawn.retrofit2" name="java8" rev="2.10.4" />

[io.github.zawn.retrofit2/java8 "2.10.4"]

'io.github.zawn.retrofit2:java8:jar:2.10.4'