return new UpdateRequest(fessConfig.getIndexDocumentUpdateIndex(), id).script(script)
                                                .upsert(upsertMap);
                                    }
                                    return null;
                                }).filter(req -> req != null).toArray(n -> new UpdateRequest[n]);

                                    Operation controls whether or not to update/add a tag, or to remove it.

                                    Valid Options: UPSERT, REMOVE
                                  enum:
                                  - UPSERT
                                  - REMOVE
                                  type: string
                                value: