old_contents: """
  `jsonvalidator` is a simple validator for testing the format of json string
  """
  import json
  def jsonvalidator(jsonString):
      """
      Return the status of json validator
      """
      isValid = True
      try:
          datas = json.loads(jsonString)
      except Exception as ex:
          isValid = False
          print '| JSON | ERROR | ' + str(ex)
  
      return isValid
  
new_contents: """
  `jsonvalidator` is a simple validator for testing the format of json string
  """
  import json
  def jsonvalidator(jsonString):
      """
      Return the status of json validator
      """
      try:
          datas = json.loads(jsonString)
      except Exception as ex:
          print '| JSON | ERROR | ' + str(ex)
          return False
  
      return True
  
subject: Remove isValid