Create automatic object reference for arrays

[BigDataKatha]

Issue: the legs object is supposed to be an array.
Objective: Looking for a way to create an automatic object reference that shows legs as an array in the journey object and avoids adding an extra field, i.e. "fields" under the additionalInfo object to accomplish that.

Current legs object:

"legs": {
      "flightNumber": "EM110",
      "route": "SFO>MIA",
      "departureAirport": {
        "name": "Miami International Airport",
        "iataCode": "MIA"
      },
      "departureTime": "2027-03-04T06:35:00-08:00",
      "arrivalAirport": {
        "name": "Miami International Airport",
        "iataCode": "MIA"
      },
      "arrivalTime": "2027-03-04T13:35:00-08:00",
      "estimatedDuration": "PT6H30M",
      "departureCity": {
        "name": "San Francisco",
        "cityCode": "SFO"
      },
      "departureCountry": {
        "name": "United States",
        "isoCode": "US"
      },
      "arrivalCity": {
        "name": "Miami",
        "cityCode": "MIA"
      },
      "arrivalCountry": {
        "name": "United States",
        "isoCode": "US"
      },
      "flightType": "DOMESTIC",
      "operatingAirline": {
        "name": "EveryMundo",
        "iataCode": "EM"
      },
      "aircraft": "Boeing 747"
    },
    "departureCity": {
      "name": "San Francisco",
      "cityCode": "SFO"
    },
    "departureCountry": {
      "name": "United States",
      "isoCode": "US"
    },
    "arrivalCity": {
      "name": "New York",
      "cityCode": "NYC"
    },
    "arrivalCountry": {
      "name": "United States",
      "isoCode": "US"
    },
    "flightType": "DOMESTIC",
    "routeType": "CONNECTING",
    "discount": {
      "isDiscount": true,
      "code": "AFFBFAN",
      "amount": 500,
      "percentage": 0.5,
      "expiration": "2017-12-31"
    },
    "additionalInfo": {
      "fields": [
        {
          "name": "classOfService",
          "value": "COACH_EC"
        }
      ]
    },

Expected legs object:

"legs": [
     {
      "flightNumber": "EM110",
      "route": "SFO>MIA",
      "departureAirport": {
        "name": "Miami International Airport",
        "iataCode": "MIA"
      },
      "departureTime": "2027-03-04T06:35:00-08:00",
      "arrivalAirport": {
        "name": "Miami International Airport",
        "iataCode": "MIA"
      },
      "arrivalTime": "2027-03-04T13:35:00-08:00",
      "estimatedDuration": "PT6H30M",
      "departureCity": {
        "name": "San Francisco",
        "cityCode": "SFO"
      },
      "departureCountry": {
        "name": "United States",
        "isoCode": "US"
      },
      "arrivalCity": {
        "name": "Miami",
        "cityCode": "MIA"
      },
      "arrivalCountry": {
        "name": "United States",
        "isoCode": "US"
      },
      "flightType": "DOMESTIC",
      "operatingAirline": {
        "name": "EveryMundo",
        "iataCode": "EM"
      },
      "aircraft": "Boeing 747"
    },
    "departureCity": {
      "name": "San Francisco",
      "cityCode": "SFO"
    },
    "departureCountry": {
      "name": "United States",
      "isoCode": "US"
    },
    "arrivalCity": {
      "name": "New York",
      "cityCode": "NYC"
    },
    "arrivalCountry": {
      "name": "United States",
      "isoCode": "US"
    },
    "flightType": "DOMESTIC",
    "routeType": "CONNECTING",
    "discount": {
      "isDiscount": true,
      "code": "AFFBFAN",
      "amount": 500,
      "percentage": 0.5,
      "expiration": "2017-12-31"
    },
    "additionalInfo": [
        {
          "name": "classOfService",
          "value": "COACH_EC"
        }
      ]
   }
],

@neilgoldman , do you have an idea on how to achieve this?