src/main/java/com/github/fge/grappa/parsers/BaseParser.java
@DontLabel
    public Rule zeroOrMore(final Object rule, final Object rule2,
        final Object... moreRules)
    {
        return repeat(rule, rule2, moreRules).min(0);
    }
@DontLabel
    public Rule zeroOrMore(final Object rule, final Object rule2,
        final Object... moreRules)
    {
        return repeat(rule, rule2, moreRules).min(0);
    }
Try and match a set of rules zero or more times

<p>This is an alias for {@code repeat(rule, rule2, ...).min(0)}.</p>

@param rule the first subrule
@param rule2 the second subrule
@param moreRules the other subrules
@return a rule