ueblueprint/tests/resources/EntityF.js

import AttributeInfo from "../../js/entity/AttributeInfo.js"
import IEntity from "../../js/entity/IEntity.js"
import Union from "../../js/entity/Union.js"
import Grammar from "../../js/serialization/Grammar.js"

export default class EntityF extends IEntity {

    static attributes = {
        ...super.attributes,
        arg1: AttributeInfo.createType(Number),
        arg2: AttributeInfo.createType(String),
        lookbehind: new AttributeInfo({
            ...super.attributes.lookbehind,
            default: new Union("Foo", "Bar"),
        })
    }

    static grammar = this.createGrammar()

    static createGrammar() {
        return Grammar.createEntityGrammar(this, false)
    }

    constructor(values = {}) {
        super(values)
    }
}