Type:                   "array",
				Items: &apiextensions.JSONSchemaPropsOrArray{Schema: &apiextensions.JSONSchemaProps{
					Type: "string",
				}},
			},
			expected: withVendorExtensions(new(spec.Schema), "x-kubernetes-preserve-unknown-fields", true),
		},
		{
			name: "preserve-unknown-fields in objects",
			in: &apiextensions.JSONSchemaProps{
				XPreserveUnknownFields: pointer.BoolPtr(true),