*            登録するJDBCドライバのクラス。{@literal null}であってはいけません
     */
    public static void registerDriver(final Class<Driver> driverClass) {
        assertArgumentNotNull("driverClass", driverClass);
        registerDriver(ClassUtil.newInstance(driverClass));
    }

    /**
     * JDBCドライバを登録します。
     *
     * @param driver
     *            登録するJDBCドライバ。{@literal null}であってはいけません
     */

                            "required": False,
                            "schema": IsDict(
                                {
                                    "anyOf": [{"type": "string"}, {"type": "null"}],
                                    "title": "Q",
                                }
                            )
                            | IsDict(

/**
 * @param {?string} str
 * @return {boolean} Whether the given string is null or is the empty string.
 * @public
 */
Platform.stringIsNullOrEmpty = function(str) {
  return !str;
};


/**
 * @param {?string} str
 * @return {string} Original str, if it is non-null. Otherwise empty string.
 */
Platform.nullToEmpty = function(str) {
  return str || "";
};


/**
 * @param {?string} str

            UserAgentType uaType = (UserAgentType) request.getAttribute(USER_AGENT_TYPE);
            if (uaType == null) {
                final String userAgent = request.getHeader(USER_AGENT);
                if (userAgent != null) {
                    if (userAgent.indexOf("MSIE") >= 0 || userAgent.indexOf("Trident") >= 0) {
                        uaType = UserAgentType.IE;

            else -> "${inetAddress.hostAddress}:$localPort"
          }

      // Allow null in failure case to allow for testing bad requests
      this.requestUrl = "$scheme://$hostAndPort$path".toHttpUrlOrNull()
    } else {
      this.requestUrl = null
      this.method = null
      this.path = null
    }
  }

  override fun toString(): String = requestLine

      throws IOException {
    Path parentPath = getParentPath(path);
    if (parentPath == null) {
      throw new FileSystemException(path.toString(), null, "can't delete recursively");
    }

    Collection<IOException> exceptions = null; // created lazily if needed
    try {
      boolean sdsSupported = false;

      throws IOException {
    Path parentPath = getParentPath(path);
    if (parentPath == null) {
      throw new FileSystemException(path.toString(), null, "can't delete recursively");
    }

    Collection<IOException> exceptions = null; // created lazily if needed
    try {
      boolean sdsSupported = false;

    notEqualObject1 = new ValidTestObject(0, 2);
  }

  /** Test null reference yields error */
  public void testAddNullReference() {
    assertThrows(NullPointerException.class, () -> equalsTester.addEqualityGroup((Object) null));
  }

  /** Test equalObjects after adding multiple instances at once with a null */
  public void testAddTwoEqualObjectsAtOnceWithNull() {
    assertThrows(

        this(time, properties != null ? properties.getProperty(BUILD_TIMESTAMP_FORMAT_PROPERTY) : null);
    }

    public MavenBuildTimestamp(Date time, String timestampFormat) {
        if (timestampFormat == null) {
            timestampFormat = DEFAULT_BUILD_TIMESTAMP_FORMAT;
        }
        if (time == null) {
            time = new Date();
        }

    public ProtoLogger() {
        this(null, null);
    }

    public ProtoLogger(@Nullable OutputStream out, @Nullable OutputStream err) {
        this.out = new PrintWriter(toPsOrDef(out, System.out), true);
        this.err = new PrintWriter(toPsOrDef(err, System.err), true);
    }

    private PrintStream toPsOrDef(OutputStream outputStream, PrintStream def) {
        if (outputStream == null) {
            return def;
        }