build method
Implementation
@override
Parser<I, Object?> build(ParserBuilder<I> builder) {
return Fast9(
name: name,
builder.build(p1),
builder.build(p2),
builder.build(p3),
builder.build(p4),
builder.build(p5),
builder.build(p6),
builder.build(p7),
builder.build(p8),
builder.build(p9),
);
}