code: @PluginFactory
      public static PaxOsgiAppender createAppender(
              // @formatter:off
              @PluginAttribute("name") final String name,
              @PluginAttribute("filter") final String filter,
              @PluginConfiguration final Configuration config) {
              // @formatter:on
  
          if (name == null) {
              StatusLogger.getLogger().error("No name provided for PaxOsgiAppender");
              return null;
          }
          return new PaxOsgiAppender(name, filter);
      }
docs: Create a Pax Osgi Appender.
  @param name The name of the Appender.
  @param filter defaults to "*", can be any string that works as a value in {@link org.osgi.framework.Filter}
  @param config The Configuration
  @return The FileAppender.