"subRoot": {
							Type: "string",
							XValidations: apiextensions.ValidationRules{
								{
									Rule:    "self.startsWith('s')",
									Message: "subRoot should start with 's'.",
								},
								{
									Rule:    "self.endsWith('s')",
									Message: "subRoot should end with 's'.",
								},
							},
						},
					},
				},
			},