code: public BldResPath jsPostProcessors( JSPostProcessor ... procs) {
          prodModePostProcessors.clear();
          for (int i = 0; i < procs.length; i++) {
              prodModePostProcessors.add(procs[i]);
          }
          return this;
      }
docs: post processors are invoked on js fragments/files once "minify" is set to true.
  by default JSMinification postprocessor is set.
  Calling this resets post processor array.
  (see JSMinificationPostProcessor, ClojureJSPostProcessor)
  @param procs
  @return