*
     * @param objs the log objects (should contain a Throwable)
     */
    protected void processSystemError(final Object... objs) {
        final Throwable t = (Throwable) objs[0];
        if (logger.isErrorEnabled()) {
            logger.error("System Error.", t);
        }
    }

    /**
     * Processes no rule found log events.
     *
     * @param objs the log objects (should contain ResponseData)

     *
     * @param error
     */
    void warn(Throwable error);

    /**
     * @return true if the <b>error</b> error level is enabled
     */
    boolean isErrorEnabled();

    /**
     * Send a message to the user in the <b>error</b> error level.
     *
     * @param content
     */
    void error(CharSequence content);

    /**

Throwable); public abstract void info(Throwable); public abstract boolean isWarnEnabled(); public abstract void warn(CharSequence); public abstract void warn(CharSequence, Throwable); public abstract void warn(Throwable); public abstract boolean isErrorEnabled(); public abstract void error(CharSequence); public abstract void error(CharSequence, Throwable); public abstract void error(Throwable); } org/apache/maven/plugin/logging/SystemStreamLog.class package org.apache.maven.plugin.logging; public synchronized...

            } else if (logger.isDebugEnabled()) {
                LogStream.setLevel(3);
            } else if (logger.isWarnEnabled()) {
                LogStream.setLevel(2);
            } else if (logger.isErrorEnabled()) {
                LogStream.setLevel(1);
            } else {
                LogStream.setLevel(0);
            }
        }

        LogStream.setInstance(new PrintStream(new OutputStream() {

    void warn(Supplier<String> content);

    void warn(Supplier<String> content, Throwable error);

    /**
     * {@return true if the <b>error</b> error level is enabled}
     */
    boolean isErrorEnabled();

    /**
     * Sends a message to the user in the <b>error</b> error level.
     *
     * @param content the message to log
     */
    void error(CharSequence content);

    /**

        } else if (cae.isWarnEnabled()) {
            logger.warn("[{}] Crawling Access Exception: url={}", failureUrlId, urlQueue.getUrl(), cae);
        } else if (cae.isErrorEnabled()) {
            logger.error("[{}] Crawling Access Exception: url={}", failureUrlId, urlQueue.getUrl(), cae);
        }

        ComponentUtil.getCrawlerStatsHelper().record(urlQueue, StatsAction.ACCESS_EXCEPTION);

            return log.isDebugEnabled();
        case INFO:
            return log.isInfoEnabled();
        case WARN:
            return log.isWarnEnabled();
        case ERROR:
            return log.isErrorEnabled();
        case FATAL:
            return log.isFatalEnabled();
        default:
            throw new ClIllegalArgumentException("logLevel", "ECL0009", asArray(logLevel, logLevel));
        }
    }

                    return "5";
                }
                if (logger.isWarnEnabled()) {
                    return "6";
                }
                if (logger.isErrorEnabled()) {
                    return "7";
                }
                return "0";
            }
            if (SpnegoHttpFilter.Constants.LOGIN_CONF.equals(name)) {