docs: @Nonnull
    public final UnifiedResponse setAllowMimeSniffing (final boolean bAllow)
    {
      if (bAllow)
        removeCustomResponseHeaders (CHttpHeader.X_CONTENT_TYPE_OPTIONS);
      else
        setCustomResponseHeader (CHttpHeader.X_CONTENT_TYPE_OPTIONS, CHttpHeader.VALUE_NOSNIFF);
      return this;
    }