code: @SuppressWarnings("unchecked")
      public void setSwitchers(Switcher<T>[] switchers) {
          if (switchers != null && switchers.length > 0
                  && this.switchers != null && this.switchers.length > 0) {
              Switcher<T>[] oldSwitchers = this.switchers;
              this.switchers = new Switcher[oldSwitchers.length + switchers.length];
              System.arraycopy(oldSwitchers, 0, this.switchers, 0, oldSwitchers.length);
              System.arraycopy(switchers, 0, this.switchers, oldSwitchers.length, switchers.length);
          } else {
              this.switchers = switchers;
          }
      }
docs: httl.properties: switchers=httl.spi.switchers.ScriptFilterSwitcher