docs: public static String getEbcdicEncodingIfZos()
      {
          String osName = System.getProperty("os.name");
          String encoding = null;
          
          if ( osName.equalsIgnoreCase("z/OS") || osName.equalsIgnoreCase("OS/390") ) {
              String lang = Locale.getDefault().getLanguage();
              if ( lang.startsWith(LANG_EN) ) 
                  encoding = CP1047_ENCODING;
              else if ( lang.equals(LANG_JAPAN1) || lang.equals(LANG_JAPAN2) ) 
                  encoding = SJIS_ENCODING;
          }
          return encoding;
      }