protected void copyFileToCluster(URI baseUri, List<File> files) {
		Assert.notNull(baseUri, "baseUri must not be null");
		Assert.notNull(files, "files must not be null");
		Assert.isTrue(files.size()>0,
				"files must have at least 1 file enumerated in the list");
		copyFilesToTarget(baseUri,files, adminServer.getHost());
		Map<String, String> containerMap = getAvailableContainers(adminServer);
		for (String containerHost : containerMap.values()) {
			copyFilesToTarget(baseUri, files, containerHost);
		}
	}
Copies the files required for a test to the admin server and its containers.
@param baseUri The directory to write the files.
@param files The files to be copied to the cluster.
spring-xd-integration-test/src/test/java/org/springframework/xd/integration/test/AbstractIntegrationTest.java