code: public HttpTrailersImpl getTrailers() {
  
          Object o = this.hdrPool.get();
          HttpTrailersImpl hdrs = (null == o) ? new HttpTrailersImpl() : (HttpTrailersImpl) o;
          hdrs.setFactory(this);
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(tc, "getTrailers: " + hdrs);
          }
          return hdrs;
      }
docs: Get a new trailers object. init() is not called on the object so the
  default values for certain variables are used (byte cache size, etc).
  
  @return HttpTrailersImpl