com.google.guava:listenablefuture:1.0 code example

Example: java.lang.RuntimeException: Duplicate class com.google.common.util.concurrent.ListenableFuture found in modules guava-20.0.jar (com.google.guava:guava:20.0) and listenablefuture-1.0.jar (com.google.guava:listenablefuture:1.0)

implementation 'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava'