StringBuilder builder = new StringBuilder("abc");
    List<Character> chars = charactersOf(builder);
    assertEquals(asList('a', 'b', 'c'), chars);
    builder.append("def");
    assertEquals(asList('a', 'b', 'c', 'd', 'e', 'f'), chars);
    builder.deleteCharAt(5);
    assertEquals(asList('a', 'b', 'c', 'd', 'e'), chars);
  }

  public void testNewArrayListEmpty() {

   */
  @Override
  protected final char @Nullable [] escape(char c) {
    if (c < replacementsLength) {
      char[] chars = replacements[c];
      if (chars != null) {
        return chars;
      }
    }
    if (c >= safeMin && c <= safeMax) {
      return null;
    }
    return escapeUnsafe(c);
  }

  /**

import java.io.FilterWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import org.jspecify.annotations.NullUnmarked;

/**
 * A char sink for testing that has configurable behavior.
 *
 * @author Colin Decker
 */
@NullUnmarked
public class TestCharSink extends CharSink implements TestStreamSupplier {

  private final TestByteSink byteSink;

    }

    public void test_specialCharactersInMessage() {
        // Test with special characters in message
        String message = "LDAP error: \n\t\r Special chars: @#$%^&*(){}[]|\\:;\"'<>,.?/~`";
        LdapOperationException exception = new LdapOperationException(message);

        assertEquals(message, exception.getMessage());
    }

    public void test_unicodeMessage() {

        assertNull(exception.getCause());
    }

    public void test_withSpecialCharactersInMessage() {
        // Test with special characters in message
        String message = "Error with special chars: \n\t\r\"'<>&";
        ScriptEngineException exception = new ScriptEngineException(message);

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

     */
    @Override
    public void setPath(String path) {
        if (path.length() > 0 && path.charAt(0) == '\\') {
            path = path.substring(1);
        }
        // win8.1 returns ACCESS_DENIED if the trailing backslash is included
        if (path.length() > 1 && path.charAt(path.length() - 1) == '\\') {
            path = path.substring(0, path.length() - 1);
        }
        this.name = path;

    // we can get away with i++ because the whole point of this method is to return false if we find
    // a code point that doesn't fit in a char.
    for (int i = 0; i < string.length(); i++) {
      if (string.codePointAt(i) > 0xffff) {
        return false;
      }
    }
    return true;
  }

  @SuppressWarnings("deprecation")

            return getLocalHost();
        }
        if (!Character.isDigit(host.charAt(0))) {
            return doNameQuery(new Name(host, type, scope), svr);
        }
        int IP = 0x00;
        int hitDots = 0;
        final char[] data = host.toCharArray();

        for (int i = 0; i < data.length; i++) {
            char c = data[i];
            if (c < 48 || c > 57) {

        final StringBuilder sb = new StringBuilder();
        String n = this.name;

        // fix MSBROWSE name
        if (n == null) {
            n = "null";
        } else if (n.charAt(0) == 0x01) {
            final char c[] = n.toCharArray();
            c[0] = '.';
            c[1] = '.';
            c[14] = '.';
            n = new String(c);
        }

        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);
        final Exception cause = new RuntimeException("Special chars: \n\t\r\f\b");

        // Execute
        final InvalidQueryException exception = new InvalidQueryException(messageCode, message, cause);

        // Verify special characters are preserved