docs: protected void setSpecialHeader(HeaderKeys key, byte[] value) {
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(tc, "setSpecialHeader(h,b[]): " + key.getName());
          }
          removeHdrInstances(findHeader(key), FILTER_NO);
          HeaderElement elem = getElement(key);
          elem.setByteArrayValue(value);
          addHeader(elem, FILTER_NO);
      }