docs: @Nonnull
    public QValue getQValueOfEncoding (@Nonnull final String sEncoding)
    {
      ValueEnforcer.notNull (sEncoding, "Encoding");
  
      // Direct search encoding
      QValue aQuality = m_aMap.get (_unify (sEncoding));
      if (aQuality == null)
      {
        // If not explicitly given, check for "*"
        aQuality = m_aMap.get (AcceptEncodingHandler.ANY_ENCODING);
        if (aQuality == null)
        {
          // Neither encoding nor "*" is present
          // -> assume minimum quality
          return QValue.MIN_QVALUE;
        }
      }
      return aQuality;
    }