code: def view_applications(self):
          
          endpoint = "https://rpm.newrelic.com"
          uri = "{endpoint}/accounts/{id}/applications.xml".format(endpoint=endpoint, id=self.account_id)
          response = self._make_get_request(uri)
          applications = []
  
          for application in response.findall('.//application'):
              application_properties = {}
              for field in application:
                  application_properties[field.tag] = field.text
              applications.append(Application(application_properties))
          return applications
docs: Requires: account ID (taken from Client object)
          Returns: a list of Application objects
          Endpoint: rpm.newrelic.com
          Errors: 403 Invalid API Key
          Method: Get