code: @Nonnull
    public static String getUnifiedValue (@Nullable final String sValue)
    {
      final StringBuilder aSB = new StringBuilder ();
      StringHelper.replaceMultipleTo (sValue, new char [] { '\r', '\n', '\t' }, ' ', aSB);
      return aSB.toString ();
    }
docs: Avoid having header values spanning multiple lines. This has been deprecated
  by RFC 7230 and Jetty 9.3 refuses to parse these requests with HTTP 400 by
  default.
  
  @param sValue
  The source header value. May be <code>null</code>.
  @return The unified header value without \r, \n and \t. Never
  <code>null</code>.