<dependency>
  <groupId>io.github.openvega</groupId>
  <artifactId>protobuf</artifactId>
  <version>3.5.2.1</version>
  <type>nar</type>
</dependency>

implementation 'io.github.openvega:protobuf:3.5.2.1'

implementation("io.github.openvega:protobuf:3.5.2.1")

libraryDependencies += "io.github.openvega" % "protobuf" % "3.5.2.1"

@Grapes(
  @Grab(group='io.github.openvega', module='protobuf', version='3.5.2.1')
)

<dependency org="io.github.openvega" name="protobuf" rev="3.5.2.1" />

[io.github.openvega/protobuf "3.5.2.1"]

'io.github.openvega:protobuf:jar:3.5.2.1'