How to use the railroad-diagrams.ZeroOrMore function in railroad-diagrams

function renderTok(tok) {
            // ctx translated to correct position already
            if (tok.subexpression) {
                return new rr.Choice(0, tok.subexpression.map(renderTok));
            } else if (tok.ebnf) {
                switch (tok.modifier) {
                case ":+":
                    return new rr.OneOrMore(renderTok(tok.ebnf));
                    break;
                case ":*":
                    return new rr.ZeroOrMore(renderTok(tok.ebnf));
                    break;
                case ":?":
                    return new rr.Optional(renderTok(tok.ebnf));
                    break;
                }
            } else if (tok.literal) {
                return new rr.Terminal(JSON.stringify(tok.literal));
            } else if (tok.mixin) {
                return new rr.Comment("Pas implementé.");
            } else if (tok.macrocall) {
                return new rr.Comment("Pas implementé.");
            } else if (tok.tokens) {
                return new rr.Sequence(tok.tokens.map(renderTok));
            } else if (typeof(tok) === 'string') {
                return new rr.NonTerminal(tok);
            } else if (tok.constructor === RegExp) {

yes
													no
													no
												
											
										
									

									<div>
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																							NonTerminal('new name')
																					),
																					','
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