Remove empty object attribute from schema when it actually corresponds to a circular reference

[ratiaris]

Remove"spouse": {} from borrower definition in below example.

Before

operationJsonSchema after expand {
 "type": "object",
 "properties": {
  "loan": {
   "title": "loan",
   "type": "object",
   "properties": {
    "amount": {
     "title": "amount",
     "type": "integer"
    },
    "loanToValue": {
     "title": "loan to value",
     "type": "number",
     "format": "double"
    },
    "numberOfMonthlyPayments": {
     "title": "number of monthly payments",
     "type": "integer"
    },
    "startDate": {
     "title": "start date",
     "type": "string",
     "description": "The format for this field is \"date-time\" as defined in rfc3339 (https://tools.ietf.org/html/rfc3339#section-5.6)",
     "format": "date-time"
    }
   }
  },
  "borrower": {
   "title": "borrower",
   "type": "object",
   "properties": {
    "SSN": {
     "title": "SSN",
     "type": "object",
     "properties": {
      "areaNumber": {
       "title": "area number",
       "type": "string"
      },
      "groupCode": {
       "title": "group code",
       "type": "string"
      },
      "serialNumber": {
       "title": "serial number",
       "type": "string"
      }
     }
    },
    "birthDate": {
     "title": "birth date",
     "type": "string",
     "description": "The format for this field is \"date-time\" as defined in rfc3339 (https://tools.ietf.org/html/rfc3339#section-5.6)",
     "format": "date-time"
    },
    "creditScore": {
     "title": "credit score",
     "type": "integer"
    },
    "firstName": {
     "title": "first name",
     "type": "string"
    },
    "lastName": {
     "title": "last name",
     "type": "string"
    },
    "latestBankruptcy": {
     "title": "bankruptcy",
     "type": "object",
     "properties": {
      "chapter": {
       "title": "chapter",
       "type": "integer"
      },
      "date": {
       "title": "date",
       "type": "string",
       "description": "The format for this field is \"date-time\" as defined in rfc3339 (https://tools.ietf.org/html/rfc3339#section-5.6)",
       "format": "date-time"
      },
      "reason": {
       "title": "reason",
       "type": "string"
      }
     }
    },
    "spouse": {},
    "yearlyIncome": {
     "title": "yearly income",
     "type": "integer"
    },
    "zipCode": {
     "title": "zip code",
     "type": "string"
    }
   }
  },
  "currentTime": {
   "type": "string",
   "description": "The format for this field is \"date-time\" as defined in rfc3339 (https://tools.ietf.org/html/rfc3339#section-5.6)",
   "format": "date-time"
  }
 },
 "x-ibm-parameter-wrapper": true
}

After

operationJsonSchema after expand {
 "type": "object",
 "properties": {
  "loan": {
   "title": "loan",
   "type": "object",
   "properties": {
    "amount": {
     "title": "amount",
     "type": "integer"
    },
    "loanToValue": {
     "title": "loan to value",
     "type": "number",
     "format": "double"
    },
    "numberOfMonthlyPayments": {
     "title": "number of monthly payments",
     "type": "integer"
    },
    "startDate": {
     "title": "start date",
     "type": "string",
     "description": "The format for this field is \"date-time\" as defined in rfc3339 (https://tools.ietf.org/html/rfc3339#section-5.6)",
     "format": "date-time"
    }
   }
  },
  "borrower": {
   "title": "borrower",
   "type": "object",
   "properties": {
    "SSN": {
     "title": "SSN",
     "type": "object",
     "properties": {
      "areaNumber": {
       "title": "area number",
       "type": "string"
      },
      "groupCode": {
       "title": "group code",
       "type": "string"
      },
      "serialNumber": {
       "title": "serial number",
       "type": "string"
      }
     }
    },
    "birthDate": {
     "title": "birth date",
     "type": "string",
     "description": "The format for this field is \"date-time\" as defined in rfc3339 (https://tools.ietf.org/html/rfc3339#section-5.6)",
     "format": "date-time"
    },
    "creditScore": {
     "title": "credit score",
     "type": "integer"
    },
    "firstName": {
     "title": "first name",
     "type": "string"
    },
    "lastName": {
     "title": "last name",
     "type": "string"
    },
    "latestBankruptcy": {
     "title": "bankruptcy",
     "type": "object",
     "properties": {
      "chapter": {
       "title": "chapter",
       "type": "integer"
      },
      "date": {
       "title": "date",
       "type": "string",
       "description": "The format for this field is \"date-time\" as defined in rfc3339 (https://tools.ietf.org/html/rfc3339#section-5.6)",
       "format": "date-time"
      },
      "reason": {
       "title": "reason",
       "type": "string"
      }
     }
    },
    "yearlyIncome": {
     "title": "yearly income",
     "type": "integer"
    },
    "zipCode": {
     "title": "zip code",
     "type": "string"
    }
   }
  },
  "currentTime": {
   "type": "string",
   "description": "The format for this field is \"date-time\" as defined in rfc3339 (https://tools.ietf.org/html/rfc3339#section-5.6)",
   "format": "date-time"
  }
 },
 "x-ibm-parameter-wrapper": true
}