code: public static Builder builder(PegDownPlugins like) {
          return builder().withInlinePluginRules(like.getInlinePluginRules()).withBlockPluginRules(like.getBlockPluginRules()).
          		withHtmlSerializer(like.serializerPlugins.toArray(new ToHtmlSerializerPlugin[0]));
      }
docs: Create a builder that is a copy of the existing plugins