message: Add swagger of SAP C4C Sink
diff: "type"
  ]
  },
  + "SapCloudForCustomerSink": {
  + "description": "A copy activity SAP Cloud for Customer sink.",
  + "type": "object",
  + "allOf": [
  + {
  + "$ref": "#/definitions/CopySink"
  + }
  + ],
  + "properties": {
  + "writeBehavior": {
  + "description": "The write behavior for the operation. Default is 'Insert'.",
  + "type": "string",
  + "enum": [
  + "Insert",
  + "Update"
  + ],
  + "x-ms-enum": {
  + "name": "SapCloudForCustomerSinkWriteBehavior",
  + "modelAsString": true
  + }
  + }
  + }
  + },
  "AzureQueueSink": {
  "description": "A copy activity Azure Queue sink.",
  "type": "object",
  