在JSON模式中，当一个属性引用另一个已定义的模式时，为了保留被引用定义的类型，是否最好将被引用的定义 Package 在“allOf”中，并在被引用定义之外的该定义中指示属性类型？或者在引用的定义中指明属性类型而不使用“allOf”是否更好？
例如，在下面的第一个模式中，mainObject和objectA的属性引用都 Package 在“allOf”和“type”中：在mainObject和objectA属性中使用“object”。而在模式版本2中，“mainObject”和“objectAInfo”定义指示“object”的“类型”。
从我在测试中看到的情况来看，这两个版本都实现了相同的验证目标，所以我想知道是否有特别的理由使用模式版本1而不是模式版本2？
架构版本1：

{
  "info": {
    "title": "mainObject",
    "version": "0.0.1",
    "baseUri": "",
    "description": "An example object schema"
  },
  "properties": {
    "mainObject": {
      "type": "object",
      "allOf": [
        {
          "$ref": "#/definitions/mainObject"
        }
      ]
    }
  },
  "required": [],
  "definitions": {
    "mainObject": {
      "additionalProperties": false,
      "description": "The financials entity root.",
      "required": [],
      "properties": {
        "objectA": {
          "type": "object",
          "description": "Information on the liability accrued by the taxpayer",
          "allOf": [
            {
              "$ref": "#/definitions/objectAInfo"
            }
          ]
        }
      }
    },
    "objectAInfo": {
      "additionalProperties": false,
      "required": [],
      "properties": {
        "total1": {
          "type": "number",
          "description": "Overall liability accrued during the tax period. This number does not go down as the taxpayer pays off their liability. That is reflected in the periodBalance."
        },
        "total2": {
          "type": "number",
          "description": "Overall liability accrued during the tax period. This number does not go down as the taxpayer pays off their liability. That is reflected in the periodBalance."
        }
      }
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#",
  "lang": "zxx",
  "$id": "http://example.com/"
}

架构版本2：

{
  "info": {
    "title": "mainObject",
    "version": "0.0.1",
    "baseUri": "",
    "description": "An example object schema"
  },
  "properties": {
    "mainObject": {
      "$ref": "#/definitions/mainObject"
    }
  },
  "required": [],
  "definitions": {
    "mainObject": {
      "type": "object",
      "additionalProperties": false,
      "description": "The financials entity root.",
      "required": [],
      "properties": {
        "objectA": {
          "$ref": "#/definitions/objectAInfo"
        }
      }
    },
    "objectAInfo": {
      "type": "object",
      "additionalProperties": false,
      "required": [],
      "properties": {
        "total1": {
          "type": "number",
          "description": "Overall liability accrued during the tax period. This number does not go down as the taxpayer pays off their liability. That is reflected in the periodBalance."
        },
        "total2": {
          "type": "number",
          "description": "Overall liability accrued during the tax period. This number does not go down as the taxpayer pays off their liability. That is reflected in the periodBalance."
        }
      }
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#",
  "lang": "zxx",
  "$id": "http://example.com/"
}

要验证的文档示例：

{
  "mainObject": {
    "objectA": {
      "total1": 0,
      "total2": 1
    }
  }
}