code: def get_name(self):
          
          return getattr(self, 'dependent_host_name', '') + '/'\
              + getattr(self, 'dependent_service_description', '') \
              + '..' + getattr(self, 'host_name', '') + '/' \
              + getattr(self, 'service_description', '')
docs: Get name based on 4 class attributes
          Each attribute is substituted by '' if attribute does not exist
  
          :return: dependent_host_name/dependent_service_description..host_name/service_description
          :rtype: str
          TODO: Clean this function (use format for string)