def ansi = Mock(Ansi)
    def factory = new AnsiFactory() {
        Ansi create() {
            return ansi
        }
    }
    def writeCursor = Cursor.at(42, 0)
    def target = Stub(Appendable)
    def colorMap = new DefaultColorMap()
    def consoleMetaData = Mock(ConsoleMetaData)
    def listener = Mock(DefaultAnsiExecutor.NewLineListener)

import org.apache.maven.api.annotations.Nonnull;

/**
 * Message builder that supports configurable styling.
 *
 * @since 4.0.0
 * @see MessageBuilderFactory
 */
public interface MessageBuilder extends Appendable {

    /**
     * Append message content in trace style.
     * By default, bold magenta
     *
     * @param message the message to append
     * @return the current builder
     */
    @Nonnull

        public Builder newEntry(String name) {
            Entry entry = new Entry();
            entries.put(name, entry);

            return new Builder(entry);
        }

        private void toJson(Appendable writer) {
            Gson gson = new GsonBuilder()
                .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES)
                .setPrettyPrinting()
                .create();

    assertThat(ArbitraryInstances.get(Appendable.class).toString()).isEmpty();
    assertThat(ArbitraryInstances.get(StringBuilder.class).toString()).isEmpty();
    assertThat(ArbitraryInstances.get(StringBuffer.class).toString()).isEmpty();
    assertFreshInstanceReturned(
        ArrayList.class,
        HashMap.class,
        Appendable.class,
        StringBuilder.class,
        StringBuffer.class,

    def ansi = Mock(Ansi)
    def factory = new AnsiFactory() {
        Ansi create() {
            return ansi
        }
    }
    def writeCursor = new Cursor()
    def target = Stub(Appendable)
    def colorMap = new TestColorMap()
    def consoleMetaData = Mock(ConsoleMetaData)
    def newLineListener = Mock(DefaultAnsiExecutor.NewLineListener)

    assertThat(ArbitraryInstances.get(Appendable.class).toString()).isEmpty();
    assertThat(ArbitraryInstances.get(StringBuilder.class).toString()).isEmpty();
    assertThat(ArbitraryInstances.get(StringBuffer.class).toString()).isEmpty();
    assertFreshInstanceReturned(
        ArrayList.class,
        HashMap.class,
        Appendable.class,
        StringBuilder.class,
        StringBuffer.class,

		return buf
	}
	if ASCIIonly {
		if r < utf8.RuneSelf && IsPrint(r) {
			buf = append(buf, byte(r))
			return buf
		}
	} else if IsPrint(r) || graphicOnly && isInGraphicList(r) {
		return utf8.AppendRune(buf, r)
	}
	switch r {
	case '\a':
		buf = append(buf, `\a`...)
	case '\b':
		buf = append(buf, `\b`...)
	case '\f':
		buf = append(buf, `\f`...)
	case '\n':
		buf = append(buf, `\n`...)
	case '\r':

  }

  /**
   * Copies all characters from a file to an appendable object, using the given character set.
   *
   * @param from the source file
   * @param charset the charset used to decode the input stream; see {@link StandardCharsets} for
   *     helpful predefined constants
   * @param to the appendable object
   * @throws IOException if an I/O error occurs

		p[1] = tx | byte(r>>12)&maskx
		p[2] = tx | byte(r>>6)&maskx
		p[3] = tx | byte(r)&maskx
		return 4
	}
}

// AppendRune appends the UTF-8 encoding of r to the end of p and
// returns the extended buffer. If the rune is out of range,
// it appends the encoding of [RuneError].
func AppendRune(p []byte, r rune) []byte {
	// This function is inlineable for fast handling of ASCII.
	if uint32(r) <= rune1Max {

			"(*dictDecoder).tryWriteCopy",
		},
		"encoding/base64": {
			"assemble32",
			"assemble64",
		},
		"unicode/utf8": {
			"FullRune",
			"FullRuneInString",
			"RuneLen",
			"AppendRune",
			"ValidRune",
		},
		"unicode/utf16": {
			"Decode",
		},
		"reflect": {
			"Value.Bool",
			"Value.Bytes",
			"Value.CanAddr",
			"Value.CanComplex",
			"Value.CanFloat",