message: validation activity
diff: "activities"
  ]
  },
  + "ValidationActivity": {
  + "x-ms-discriminator-value": "Validation",
  + "description": "This activity blocks execution until a file has been validated to exist, with an optional minimum size, or the timeout is reached, whichever is earlier.",
  + "allOf": [
  + {
  + "$ref": "#/definitions/ControlActivity"
  + }
  + ],
  + "properties": {
  + "typeProperties": {
  + "description": "Validation activity properties.",
  + "x-ms-client-flatten": true,
  + "$ref": "#/definitions/ValidationActivityTypeProperties"
  + }
  + },
  + "required": [
  + "typeProperties"
  + ]
  + },
  + "ValidationActivityTypeProperties": {
  + "description": "Validation activity properties.",
  + "properties": {
  + "timeout": {
  + "type": "object",
  + "description": "Specifies the timeout for the activity to run. If there is no value specified, it takes the value of TimeSpan.FromDays(7) which is 1 week as default. Type: string (or Expression with resultType string), pattern: ((\\d+)\\.)?(\\d\\d):(60|([0-5][0-9])):(60|([0-5][0-9])). Type: string (or Expression with resultType string), pattern: ((\\d+)\\.)?(\\d\\d):(60|([0-5][0-9])):(60|([0-5][0-9]))."
  + },
  + "sleep": {
  + "description": "A delay in seconds between validation attempts. If no value is specified, 10 seconds will be used as the default.",
  + "type": "integer"
  + },
  + "minimumSize": {
  + "description": "Minimum size of a file in byte. If no value is specified, 0 byte will be used as the default.",
  + "type": "integer"
  + },
  + "dataset": {
  + "description": "Validation activity dataset reference.",
  + "$ref": "../datafactory.json#/definitions/DatasetReference"
  + }
  + },
  + "required": [
  + "dataset"
  + ]
  + },
  "FilterActivity": {
  "x-ms-discriminator-value": "Filter",
  "description": "Filter and return results from input array based on the conditions.",
  