}

                    if (logger.isDebugEnabled()) {
                        message += ": " + e.getMessage();
                    }

                    logger.warn(message);
                }

                if (project != null) {
                    Relocation relocation = null;

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

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

    /**
     * Send a message (and accompanying exception) to the user in the <b>warn</b> error level.<br>

        return false;
    }

    @Override
    public void warn(String msg) {}

    @Override
    public void warn(String format, Object arg) {}

    @Override
    public void warn(String format, Object... arguments) {}

    @Override
    public void warn(String format, Object arg1, Object arg2) {}

    @Override
    public void warn(String msg, Throwable t) {}

    @Override

                logger.warn("Failed to access Web API.", e);
                message = e.getMessage();
            } else {
                final String errorCode = UUID.randomUUID().toString();
                message = "[" + errorCode + "] Failed to access to Web API.";
                logger.warn(message, e);
            }
            response.sendError(e.getStatusCode(), message);

                        logger.warn("  " + unsafeGoal.getId());
                    }
                } else {
                    logger.warn("The following plugins are not marked as thread-safe in " + project.getName() + ":");
                    for (Plugin unsafePlugin : unsafePlugins) {
                        logger.warn("  " + unsafePlugin.getId());
                    }
                    logger.warn("");

                            // Select an appropriate available version from the (now restricted) range
                            // Note this version was selected before to get the appropriate POM
                            // But it was reset by the call to setVersionRange on restricting the version
                            ResolutionNode[] resetNodes = {previous, node};

                    if (projectsMap.containsKey(pluginKey)) {
                        LOGGER.warn(
                                "'{}' uses '{}' as extension which is not possible within the same reactor build. "
                                        + "This plugin was pulled from the local repository!",
                                project.getName(),
                                plugin.getKey());

    }

    @Override
    public void warn(CharSequence content) {
        if (isWarnEnabled()) {
            logger.warn(toString(content));
        }
    }

    @Override
    public void warn(CharSequence content, Throwable error) {
        if (isWarnEnabled()) {
            logger.warn(toString(content), error);
        }
    }

    @Override
    public void warn(Throwable error) {
        logger.warn("", error);

            logger.warn("The metadata {} {}{}", metadata, errorType, msg, exception);
        } else {
            logger.warn("The metadata {} {}{}", metadata, errorType, msg);
        }
    }

    @Override
    public void artifactDescriptorInvalid(RepositoryEvent event) {
        // The exception stack trace is not really interesting here
        logger.warn(

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

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

    /**
     * Sends a message (and accompanying exception) to the user in the <b>warn</b> error level.