message: Add new API convertToSinglePlacementGroup for VM Scale Set.
diff: }
  }
  },
  + "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/convertToSinglePlacementGroup": {
  + "post": {
  + "tags": [
  + "VirtualMachineScaleSets"
  + ],
  + "operationId": "VirtualMachineScaleSet_ConvertToSinglePlacementGroup",
  + "description": "Converts SinglePlacementGroup property to false for a existing virtual machine scale set.",
  + "parameters": [
  + {
  + "name": "resourceGroupName",
  + "in": "path",
  + "required": true,
  + "type": "string",
  + "description": "The name of the resource group."
  + },
  + {
  + "name": "vmScaleSetName",
  + "in": "path",
  + "required": true,
  + "type": "string",
  + "description": "The name of the virtual machine scale set to create or update."
  + },
  + {
  + "name": "parameters",
  + "in": "body",
  + "required": true,
  + "schema": {
  + "$ref": "#/definitions/VMScaleSetConvertToSinglePlacementGroupInput"
  + },
  + "description": "The input object for ConvertToSinglePlacementGroup API."
  + },
  + {
  + "$ref": "#/parameters/SubscriptionIdParameter"
  + }
  + ],
  + "responses": {
  + "200": {
  + "description": "OK"
  + }
  + }
  + }
  + },
  "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}/reimage": {
  "post": {
  "tags": [
  }
  },
  "description": "LogAnalytics output properties"
  + },
  + "VMScaleSetConvertToSinglePlacementGroupInput": {
  + "properties":{
  + "activePlacementGroupId": {
  + "type": "string",
  + "description": "Id of the placement group in which you want future virtual machine instances to be placed. To query placement group Id, please use Virtual Machine Scale Set VMs - Get API. If not provided, the platform will choose one with maximum number of virtual machine instances."
  + }
  + }
  }
  },
  "parameters": {
  