在给定的JSON输入中，主要对象是“Account”。目标是创建一个Jolt规范，只有在“Account”对象中不存在属性时，才有选择地从“SystemResponse”对象中选择属性。例如，如果“serviceFlag”存在于“SystemResponse”中，但不存在于“Account”中，则应将其添加到“Account”。但是，如果“Account”对象中已存在“resellerFlag”（Map到“Account”中的“isReseller”）等属性，则应忽略这些属性。
请帮助我实现这个有条件的属性选择。

Input.json

{
  "Account": {
    "AccountInfo": {
      "isReseller": 10,
      "poRequired": 10
    }
  },
  "SystemResponse": {
    "resellerFlag": "false",
    "poRequiredFlag": "false",
    "serviceFlag": "true"
  }
}

输出.json

[
  {
    "operation": "shift",
    "spec": {
      "Account": {
        "AccountInfo": {
          "*": "Account.AccountInfo.&"
        }
      },
      "SystemResponse": {
        "@resellerFlag": {
          "false": {
            // Check if isReseller doesn't already exist in Account
            "Account.AccountInfo.isReseller": {
              "#0": "partyAccount.eqxAccountInfo.isReseller"
            }
          }
        },
        "poRequiredFlag": {
          "false": {
            // Check if poRequired doesn't already exist in Account
            "@Account.AccountInfo.poRequired": {
              "#0": "Account.AccountInfo.poRequired"
            }
          }
        },
        "serviceFlag": {
          "false": {
            // Check if poRequired doesn't already exist in Account
            "@Account.AccountInfo.isService": {
              "#0": "Account.AccountInfo.isService"
            }
          },
          "true": {
            // Check if poRequired doesn't already exist in Account
            "@Account.AccountInfo.isService": {
              "#1": "Account.AccountInfo.isService"
            }
          }
        }
      }
    }
  }
]

实际产量

{
  "Account" : {
    "AccountInfo" : {
      "isReseller" : 10,
      "poRequired" : 10
    }
  }
}

预期输出json

{
  "Account" : {
    "AccountInfo" : {
      "isReseller" : 10,
      "poRequired" : 10,
      "isService" : 1
    }
  }
}