Method get

lib/util/comparators.js:400–406

* Returns value. * @param {K1} key1 first key * @param {K2} key2 second key * @returns {T | undefined} value

(key1, key2)

	 * @returns {T | undefined} value
	 */
	get(key1, key2) {
		const childMap = this._map.get(key1);
		if (childMap === undefined) {
			return;
		}
		return childMap.get(key2);
	}

	/**
	 * Updates value using the provided key1.