public String getOptionString(String optName) {
        Object optValue = m_options.get(optName);
        if (optValue == null) {
            return null;
        }
        return optValue.toString();
    }
public String getOptionString ( String optName ) { Object optValue = m_options . get ( optName ) ; if ( optValue == null ) { return null ; } return optValue . toString ( ) ; }
Get the value of the option with the given name, if defined, as a String. If the
option is defined, toString() is called to create the String.

@param optName   Name of option to fetch.
@return          Option value as a String or null if not defined.