public ParserResults parse(final String contentSpec, final ParsingMode mode) {
        return parse(contentSpec, mode, false);
    }
public ParserResults parse ( final String contentSpec , final ParsingMode mode ) { return parse ( contentSpec , mode , false ) ; }
Parse a Content Specification to put the string into usable objects that can then be validate.

@param contentSpec A string representation of the Content Specification.
@param mode        The mode in which the Content Specification should be parsed.
@return True if everything was parsed successfully otherwise false.