code: @Override
      public WebServer<T> setPippoFilter(PippoFilter pippoFilter) {
          this.pippoFilter = pippoFilter;
  
          pippoFilter.setApplication(application);
  
          return this;
      }
docs: Set the {@link PippoFilter} instance.
  This method call {@link PippoFilter#setApplication(Application)} to end.
  
  @param pippoFilter
  @return