tentative fix (#2999)

Author: l-trotta

output/openapi/elasticsearch-openapi.json

@@ -21,7 +21,10 @@ import { IndexName } from '@_types/common'
 import { ShardStatistics } from '@_types/Stats'
 
 export class Response {
-  body: { snapshot: SnapshotRestore }
+  body: {
+    accepted?: boolean
+    snapshot?: SnapshotRestore
+  }
 }
 
 export class SnapshotRestore {