### Question:
Buildah { public BuildahListContainersCommand.Builder listContainers() { return new BuildahListContainersCommand.Builder(this.buildahExecutor); } Buildah();  Buildah(final BuildahConfiguration buildahConfiguration);  Buildah(CliExecutor buildahExecutor); BuildahFromCommand.Builder createContainer(String baseImageName); BuildahListContainersCommand.Builder listContainers(); BuildahImagesCommand.Builder listImages(); BuildahRunCommand.Builder run(String containerName, String commandRun); BuildahVersionCommand.Builder version(); BuildahLoginCommand.Builder login(String registryName); BuildahLogoutCommand.Builder logout(); BuildahPushCommand.Builder push(String imageId); BuildahCommitCommand.Builder commit(String containerId); BuildahConfigCommand.Builder config(String containerId); BuildahAddCommand.Builder add(String containerId, String source); BuildahCopyCommand.Builder copy(String containerId, String source); BuildahRemoveCommand.Builder rm(); BuildahRemoveImageCommand.Builder rmi(); BuildahInspectCommand.Builder inspect(); BuildahMountCommand.Builder mount(); BuildahBudCommand.Builder bud(String context); BuildahPullCommand.Builder pull(String imageName); BuildahTagCommand.Builder tag(String imageName);  }### Answer:
@Test public void should_list_containers() { final Buildah buildah = new Buildah(buildahExecutor); final BuildahListContainersCommand buildahListContainersCommand = buildah.listContainers().build(); buildahListContainersCommand.execute(); verify(buildahExecutor).execute(buildahListContainersCommand); }