public static String nullToEmpty(@Nullable String string) {
    return Platform.nullToEmpty(string);
  }

  /**
   * Returns the given string if it is nonempty; {@code null} otherwise.
   *
   * @param string the string to test and possibly return
   * @return {@code string} itself if it is nonempty; {@code null} if it is empty or null
   */
  public static @Nullable String emptyToNull(@Nullable String string) {

package bufio_test

import (
	"bufio"
	"bytes"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func ExampleWriter() {
	w := bufio.NewWriter(os.Stdout)
	fmt.Fprint(w, "Hello, ")
	fmt.Fprint(w, "world!")
	w.Flush() // Don't forget to flush!
	// Output: Hello, world!
}

func ExampleWriter_AvailableBuffer() {
	w := bufio.NewWriter(os.Stdout)
	for _, i := range []int64{1, 2, 3, 4} {

     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The URL that failed during crawling.
     * This is a required field containing the actual URL that encountered an error.
     */
    @Required
    public String url;

    /**
     * The name of the crawler thread that encountered the failure.
     * This is a required field used for identifying which crawler process failed.

     * @throws NTLMEngineException if an NTLM engine error occurs
     * @throws CrawlingAccessException if an error occurs during message generation
     */
    @Override
    public String generateType3Msg(final String username, final String password, final String domain, final String workstation,
            final String challenge) throws NTLMEngineException {
        Type2Message type2Message;
        try {

     * @param message the detail message
     */
    public OpenSearchAccessException(final String message) {
        super(message);
    }

    /**
     * Creates a new instance of OpenSearchAccessException.
     *
     * @param message the detail message
     * @param cause the cause
     */
    public OpenSearchAccessException(final String message, final Throwable cause) {
        super(message, cause);
    }

        assertEquals(new String(testPassword), auth.getPassword());
    }

    /**
     * Test null password handling
     */
    @Test
    public void testNullPasswordHandling() {
        // Test with null String password
        NtlmPasswordAuthenticator auth1 = new NtlmPasswordAuthenticator("testuser", (String) null);
        assertNull(auth1.getPassword());

                }
                processAccessControlEntries(responseData, file);
                final Map<String, List<String>> headerFieldMap = file.getHeaderFields();
                if (headerFieldMap != null) {
                    for (final Map.Entry<String, List<String>> entry : headerFieldMap.entrySet()) {
                        responseData.addMetaData(entry.getKey(), entry.getValue());
                    }

     * @return array of input sequences
     */
    public String[] getInputs() {
        return inputs;
    }

    /**
     * Returns all input sequences joined with newline characters as a single string.
     * This is useful for display purposes in forms and user interfaces.
     *
     * @return string representation of all inputs separated by newlines, or empty string if inputs is null
     */

    protected static final String PREFERENCE_QUERY = "_query";

    /** Prefix used to identify sort parameters in search queries */
    protected String sortPrefix = "sort:";

    /** Additional query string to be appended to all search queries */
    protected String additionalQuery;

    /** Default sort builders to be applied when no explicit sorting is specified */

        }
        final String url = DocumentUtil.getValue(doc, fessConfig.getIndexFieldUrl(), String.class);
        if (url == null) {
            saveError(messages -> messages.addErrorsDocumentNotFound(GLOBAL, form.docId));
            return redirect(ErrorAction.class);
        }

        if (fessConfig.isSearchLog()) {
            final String userSessionId = userInfoHelper.getUserCode();