private static File createTmpDir() throws IOException {
		File tmpFile = new File(System.getProperty("user.dir") + "/" + TMP_DIR);
		if (!tmpFile.exists()) {
			tmpFile.createNewFile();
		}
		return tmpFile;
	}
Verifies the specified path exists on remote machine.
@param host The host where the file exists.
@param privateKey ssh private key credential
@param path path to file or directory
@return true if file exists else false.
spring-xd-integration-test/src/main/java/org/springframework/xd/integration/util/StreamUtils.java