new_contents: from model.Request import Request
  from webservice_caller.GoogleAPI import GoogleAPICaller
  
  request = Request([48.8809481,2.3568375],[48.7549066,2.3010135])
  caller = GoogleAPICaller('https://maps.googleapis.com/maps/api/directions/json?',request)
  caller.get_possibilities()
  
subject: test function