Cell<String, Integer, Character> entry = immutableCell("foo", 1, 'a');
    SerializableTester.reserializeAndAssert(entry);
  }

  public void testImmutableEntryToString() {
    Cell<String, Integer, Character> entry = immutableCell("foo", 1, 'a');
    assertThat(entry.toString()).isEqualTo("(foo,1)=a");

    Cell<@Nullable String, @Nullable Integer, @Nullable Character> nullEntry =
        immutableCell(null, null, null);

    // need explicit type parameter to avoid javac warning!?
    List<Character> none = Arrays.<Character>asList();
    assertThat(Chars.toArray(none)).isEqualTo(EMPTY);

    List<Character> one = Arrays.asList((char) 1);
    assertThat(Chars.toArray(one)).isEqualTo(ARRAY1);

    char[] array = {(char) 0, (char) 1, 'A'};

    List<Character> three = Arrays.asList((char) 0, (char) 1, 'A');

    }

    /**
     * Gets the character set for the given file.
     *
     * @param file the file to get the character set for
     * @return the character set
     */
    protected String getCharSet(final File file) {
        return charset;
    }

    /**
     * Gets the character encoding used for files.
     *
     * @return the character encoding
     */
    public String getCharset() {

     * The name of the access token.
     * This is a required field with a maximum length of 1000 characters.
     */
    @Required
    @Size(max = 1000)
    public String name;

    /**
     * The actual access token string.
     * This is the token value that will be used for authentication.
     * Maximum length is 10000 characters.
     */
    @Size(max = 10000)
    public String token;

    /**

`secrets.compare_digest()` necesita tomar `bytes` o un `str` que solo contenga caracteres ASCII (los carácteres en inglés), esto significa que no funcionaría con caracteres como `á`, como en `Sebastián`.

Para manejar eso, primero convertimos el `username` y `password` a `bytes` codificándolos con UTF-8.

  @SuppressWarnings("unchecked") // C can only be @Nullable Character or Character
  protected @NonNull C cellValue(Character character) {
    return (C) character;
  }

  // Only safe wrt. ClassCastException. Not null-safe (can be used to test expected Table NPEs)
  @SuppressWarnings("unchecked")
  protected C nullableCellValue(@Nullable Character character) {
    return (C) character;
  }

import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for managing character mapping operations.
 * <p>
 * This service handles character mapping management including CRUD operations
 * and list retrieval. Character mappings are used for text normalization
 * and character substitution during document processing and search operations.
 * </p>
 */
public class CharMappingService {

    /**

    int i = 0;
    for (Object e : elements) {
      array[i++] = (Character) e;
    }
    return create(array);
  }

  /**
   * Creates a new collection containing the given elements; implement this method instead of {@link
   * #create(Object...)}.
   */
  protected abstract List<Character> create(Character[] elements);

  @Override
  public Character[] createArray(int length) {

    super(false, false, true, true, false);
  }

  @Override
  Table<String, Character, Integer> makeTable() {
    Table<String, Character, Integer> table = HashBasedTable.create();
    return transformValues(table, DIVIDE_BY_2);
  }

  @Override
  protected Map<String, Integer> makePopulatedMap() {
    Table<String, Character, Integer> table = HashBasedTable.create();
    table.put("one", 'a', 1);

    // Valid radix values are Character.MIN_RADIX to Character.MAX_RADIX,
    // inclusive.
    assertThrows(
        NumberFormatException.class,
        () -> UnsignedBytes.parseUnsignedByte("0", Character.MIN_RADIX - 1));

    assertThrows(
        NumberFormatException.class,
        () -> UnsignedBytes.parseUnsignedByte("0", Character.MAX_RADIX + 1));