code: public void addScopeBindings(Map<Class<? extends Annotation>, Scope> bindings) {
          if (scopeCleaner.isRunning()) {
              scopeBindings.putAll(bindings);
          }
      }
docs: allows late-binding of scopes to PreDestroyMonitor, useful if more than one
  Injector contributes scope bindings
  
  @param bindings additional annotation-to-scope bindings to add