mavenConfig = cliManager.parse(args);
                    List<?> unrecognized = mavenConfig.getArgList();
                    if (!unrecognized.isEmpty()) {
                        // This file can only contain options, not args (goals or phases)
                        throw new ParseException("Unrecognized maven.config file entries: " + unrecognized);
                    }
                }
            }

For example, if a Go program is running in an environment that contains

	GODEBUG=http2client=0,http2server=0

then that Go program will disable the use of HTTP/2 by default in both
the HTTP client and the HTTP server.
Unrecognized settings in the `GODEBUG` environment variable are ignored.
It is also possible to set the default `GODEBUG` for a given program
(discussed below).

When preparing any change that is permitted by Go 1 compatibility

     * @throws IOException if an I/O error occurs
     */
    protected abstract void doRecv(Response response) throws IOException;

    /**
     * Skips an unexpected or unrecognized message.
     *
     * @throws IOException if an I/O error occurs
     */
    protected abstract void doSkip() throws IOException;

    /**
     * Sends a request and waits for the corresponding response.

		return err
	}

	if p.Format != "" {
		f := strings.ToLower(p.Format)
		if f != event.NamespaceFormat && f != event.AccessFormat {
			return fmt.Errorf("unrecognized format value")
		}
	}

	if p.ConnectionString != "" {
		// No pq API doesn't help to validate connection string
		// prior connection, so no validation for now.
	} else {

        throw new DecodingException("Unrecognized character: 0x" + Integer.toHexString(ch));
      }
      int result = decodabet[ch];
      if (result == -1) {
        if (ch <= 0x20 || ch == Ascii.MAX) {
          throw new DecodingException("Unrecognized character: 0x" + Integer.toHexString(ch));
        } else {
          throw new DecodingException("Unrecognized character: " + ch);
        }
      }

constraints.TypeFloat.message = {item} must be a number.
constraints.TypeDouble.message = {item} must be a number.
constraints.TypeAny.message = {item} cannot be converted to {propertyType}.
constraints.UriType.message = {item} has an unrecognized URI.
constraints.CronExpression.message = {item} is not a valid CRON expression.

# ----------------------------------------------------------
# Application Exception
# ---------------------

constraints.TypeFloat.message = {item} must be a number.
constraints.TypeDouble.message = {item} must be a number.
constraints.TypeAny.message = {item} cannot be converted to {propertyType}.
constraints.UriType.message = {item} has an unrecognized URI.
constraints.CronExpression.message = {item} is not a valid CRON expression.

# ----------------------------------------------------------
# Application Exception
# ---------------------

func (m MySQLArgs) Validate() error {
	if !m.Enable {
		return nil
	}

	if m.Format != "" {
		f := strings.ToLower(m.Format)
		if f != event.NamespaceFormat && f != event.AccessFormat {
			return fmt.Errorf("unrecognized format")
		}
	}

	if m.Table == "" {
		return fmt.Errorf("table unspecified")
	}

	if m.DSN != "" {
		if _, err := mysql.ParseDSN(m.DSN); err != nil {
			return err
		}
	} else {

   * can use {@link com.google.common.collect.Maps#asConverter Maps.asConverter} instead to get a
   * function that also supports reverse conversion.
   *
   * <p>If you are okay with {@code null} being returned for an unrecognized key (instead of an
   * exception being thrown), you can use the method reference {@code map::get} instead. Note that
   * it is not serializable unless you explicitly make it {@link Serializable}, typically by writing

	if a.URL.IsEmpty() {
		return errors.New("empty URL")
	}
	if a.Format != "" {
		f := strings.ToLower(a.Format)
		if f != event.NamespaceFormat && f != event.AccessFormat {
			return errors.New("format value unrecognized")
		}
	}
	if a.Index == "" {
		return errors.New("empty index value")
	}

	if (a.Username == "" && a.Password != "") || (a.Username != "" && a.Password == "") {