Function getOppositeKey

src/chart/helper/multipleGraphEdgeHelper.ts:86–89

(key)

 * @returns {string}
 */
const getOppositeKey = function (key) {
    const keys = key.split(KEY_DELIMITER);
    return [keys[0], keys[2], keys[1]].join(KEY_DELIMITER);
};

/**
 * get edgeMap with key