set(name, value) {
        const key = name.toLowerCase();

        if (typeof allowedProperties[key] === "undefined") {
            throw new Error(`Unknown property name: "${name}"`);
        }

        this._properties[key] = value;

        return this;
    }
Sets a specific property.
@param {string} name - The name of the property.
@param {*} value - The value of the property.
@returns {CoreProperties} CoreProperties.