code: def _get_multi_param(self, param_prefix):
          
          if param_prefix.endswith("."):
              prefix = param_prefix
          else:
              prefix = param_prefix + "."
          values = []
          index = 1
          while True:
              value_dict = self._get_multi_param_helper(prefix + str(index))
              if not value_dict:
                  break
  
              values.append(value_dict)
              index += 1
  
          return values
docs: Given a querystring of ?LaunchConfigurationNames.member.1=my-test-1&LaunchConfigurationNames.member.2=my-test-2
          this will return ['my-test-1', 'my-test-2']