Reflect nullability of Error and endTime (#10262)

Author: christothes

specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.2-preview/backuprestore.json

@@ -337,7 +337,8 @@
         "endTime": {
           "type": "integer",
           "format": "unixtime",
-          "description": "The end time of the restore operation"
+          "description": "The end time of the restore operation",
+          "x-nullable": true
         }
       },
       "description": "Selective Key Restore operation"
@@ -380,7 +381,8 @@
         "endTime": {
           "type": "integer",
           "format": "unixtime",
-          "description": "The end time of the backup operation in UTC"
+          "description": "The end time of the backup operation in UTC",
+          "x-nullable": true
         },
         "jobId": {
           "type": "string",
@@ -419,7 +421,8 @@
         "endTime": {
           "type": "integer",
           "format": "unixtime",
-          "description": "The end time of the restore operation"
+          "description": "The end time of the restore operation",
+          "x-nullable": true
         }
       },
       "description": "Restore operation"

specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.2-preview/common.json

@@ -67,7 +67,8 @@
           "$ref": "#/definitions/Error"
         }
       },
-      "description": "The key vault server error."
+      "description": "The key vault server error.",
+      "x-nullable": true
     }
   }
 }