docs: public static void applyOverlays(
  		Configuration configuration, ContainerSpecification containerSpec) throws IOException {
  
  		// create the overlays that will produce the specification
  		CompositeContainerOverlay overlay = new CompositeContainerOverlay(
  			FlinkDistributionOverlay.newBuilder().fromEnvironment(configuration).build(),
  			HadoopConfOverlay.newBuilder().fromEnvironment(configuration).build(),
  			HadoopUserOverlay.newBuilder().fromEnvironment(configuration).build(),
  			KeytabOverlay.newBuilder().fromEnvironment(configuration).build(),
  			Krb5ConfOverlay.newBuilder().fromEnvironment(configuration).build(),
  			SSLStoreOverlay.newBuilder().fromEnvironment(configuration).build()
  		);
  
  		// apply the overlays
  		overlay.configure(containerSpec);
  	}