final File file = tempFolder.newFile("hoge.properties");
        final Writer writer = WriterUtil.create(file);
        PropertiesUtil.store(outProperties, writer, "comments");
        CloseableUtil.close(writer);
        final Properties properties = new Properties();
        PropertiesUtil.load(properties, file);
        assertThat(properties.getProperty("a"), is("A"));
    }

    /**

        }
        enableBasic = Boolean.parseBoolean(Config.getProperty("jcifs.smb1.http.enableBasic"));
        insecureBasic = Boolean.parseBoolean(Config.getProperty("jcifs.smb1.http.insecureBasic"));
        realm = Config.getProperty("jcifs.smb1.http.basicRealm");
        if (realm == null) {
            realm = "jCIFS";
        }
    }

    @Override

    static {
        String s = Config.getProperty("jcifs.smb1.smb.client.TreeConnectAndX.CheckDirectory");

        if (s != null) {
            batchLimits[0] = Byte.parseByte(s);
        }
        if ((s = Config.getProperty("jcifs.smb1.smb.client.TreeConnectAndX.CreateDirectory")) != null) {
            batchLimits[2] = Byte.parseByte(s);
        }

    private static final String TEST_TOKEN = "test.token";

    public static String getTestToken() {
        return System.getProperty(TEST_TOKEN, DEFAULT_TEST_TOKEN);
    }

    public static String settingTestToken() {
        final String testToken = System.getProperty(TEST_TOKEN);
        if (testToken != null) {
            logger.info("Token: {}", testToken);
            return testToken;
        }

    public static final String PATH_SEPARATOR = System.getProperty("path.separator");

    /**
     * <code>os.name</code> system property. Example: <code>Mac OS X</code>
     */
    public static final String OS_NAME = System.getProperty("os.name");

    /**
     * <code>java.io.tmpdir</code> system property. Example: /tmp
     */
    public static final String JAVA_IO_TMPDIR = System.getProperty("java.io.tmpdir");

    /**

            this.insecureBasic = Boolean.parseBoolean(p.getProperty("jcifs.http.insecureBasic"));
            this.realm = p.getProperty("jcifs.http.basicRealm");
            if (this.realm == null) {
                this.realm = "jCIFS";
            }

            this.transportContext = new BaseContext(new PropertyConfiguration(p));

        } catch (final CIFSException ex) {

  val platform = PlatformRule()

  @Test
  fun testBuildsWithJettyBoot() {
    assumeTrue(System.getProperty("java.specification.version") == "1.8")
    platform.assumeJettyBootEnabled()
    assertThat(buildIfSupported()).isNotNull()
  }

  @Test
  fun testNotBuildWithOther() {
    assumeFalse(System.getProperty("java.specification.version") == "1.8")
    assertThat(buildIfSupported()).isNull()
  }

 * https://github.com/xjdr/xio/blob/master/alpn-boot.gradle
 */
fun alpnBootVersion(): String? {
  val version = System.getProperty("alpn.boot.version")

  if (version != null) {
    return version
  }

  val javaVersion = System.getProperty("java.version")
  val match = "1\\.8\\.0_(\\d+)(-.*)?".toRegex().find(javaVersion) ?: return null

        SingletonContext.getInstance();
        String pkgs = System.getProperty("java.protocol.handler.pkgs");
        if (pkgs == null) {
            System.setProperty("java.protocol.handler.pkgs", "jcifs");
        } else if (pkgs.indexOf("jcifs") == -1) {
            pkgs += "|jcifs";
            System.setProperty("java.protocol.handler.pkgs", pkgs);
        }
    }

    /**
     *
     */

        final BeanDesc beanDesc = BeanDescFactory.getBeanDesc(annotation.annotationType());
        for (final String name : beanDesc.getMethodNames()) {
            final Object v = getProperty(beanDesc, annotation, name);
            if (v != null) {
                map.put(name, v);
            }
        }
        return map;
    }

    /**
     * Returns the value of an annotation element.