bulkSession
fun SearchClient.bulkSession( bulkSize: Int = 100, target: String? = null, pipeline: String? = null, refresh: Refresh? = null, routing: String? = null, timeout: Duration? = null, waitForActiveShards: String? = null, requireAlias: Boolean? = null, source: String? = null, sourceExcludes: String? = null, sourceIncludes: String? = null, failOnFirstError: Boolean = false, callBack: BulkItemCallBack? = null, closeOnRequestError: Boolean = true, extraParameters: Map<String, String>? = null): BulkSession