docs: public char getDelimiterEscapeChar(char ch) throws DefinitionException {
        if (ch == 'E')
          return escapeCharacter;
        else if (ch == 'F')
          return fieldDelimiter;
        else if (ch == 'S')
          return componentDelimiter;
        else if (ch == 'T')
          return subComponentDelimiter;
        else if (ch == 'R')
          return repetitionDelimiter;
        else
          throw new DefinitionException("internal error in getDelimiterEscapeChar");
      }