async createIndex(index, { indexCacheOnly = false, propagate = true } = {}) {
    if (this.cache.hasIndex(index)) {
      throw servicesError.get("index_already_exists", this.scope, index);
    }

    if (!indexCacheOnly) {
      await this.client.createIndex(index);
    }

    this.cache.addIndex(index);

    if (propagate) {
      global.kuzzle.emit("core:storage:index:create:after", {
        index,
        scope: this.scope,
      });
    }
  }
Translate Koncorde filters to Elasticsearch query

@param {Object} koncordeFilters - Set of valid Koncorde filters
@returns {Object} Equivalent Elasticsearch query