<dependency>
  <groupId>org.apache.maven.indexer</groupId>
  <artifactId>indexer-core</artifactId>
  <version>7.1.2</version>
</dependency>

<dependency org="org.apache.maven.indexer" name="indexer-core" rev="7.1.2">
  <artifact name="indexer-core" type="jar" />
</dependency>

@Grapes(
@Grab(group='org.apache.maven.indexer', module='indexer-core', version='7.1.2')
)

implementation 'org.apache.maven.indexer:indexer-core:7.1.2'

libraryDependencies += "org.apache.maven.indexer" % "indexer-core" % "7.1.2"

[org.apache.maven.indexer/indexer-core "7.1.2"]