message: adding the field on which on which summary is done in the response
diff: }
  }
  },
  - "SummaryItem": {
  + "Summary": {
  "description": "Summary item.",
  "type": "object",
  "properties": {
  }
  }
  },
  + "SummaryCollection": {
  + "description": "Summary Collection.",
  + "type": "object",
  + "properties": {
  + "fieldName": {
  + "description": "Gets or sets the field name on which summary is done.",
  + "type": "string"
  + },
  + "summary": {
  + "description": "Gets or sets the list of summary items.",
  + "type": "array",
  + "items": {
  + "$ref": "#/definitions/Summary"
  + }
  + }
  + }
  + },
  "MoveCollectionProperties": {
  "description": "Defines the move collection properties.",
  "type": "object",
  "description": "Gets the value of next link.",
  "type": "string"
  },
  - "summary": {
  - "description": "Gets or the list of summary items.",
  - "type": "array",
  - "items": {
  - "$ref": "#/definitions/SummaryItem"
  - }
  + "summaryCollection": {
  + "description": "Gets or sets the list of summary items and the field on which summary is done.",
  + "$ref": "#/definitions/SummaryCollection"
  }
  }
  },
  