209      * @param array|Document[] $docs Array of Elastica\Document
217     public function updateDocuments(array $docs, array $requestParams = []): ResponseSet  argument
219         if (!$docs) {
225         $bulk->addDocuments($docs, Action::OP_TYPE_UPDATE);
242      * @param array|Document[] $docs Array of Elastica\Document
250     public function addDocuments(array $docs, array $requestParams = []): ResponseSet  argument
252         if (!$docs) {
258         $bulk->addDocuments($docs);
338      * @param array|Document[] $docs
346     public function deleteDocuments(array $docs, array $requestParams = []): ResponseSet  argument
348         if (!$docs) {
353         $bulk->addDocuments($docs, Action::OP_TYPE_DELETE);