code: def get_parallel_value_for_key(self, key):
          
          if self._remotelib:
              return self._remotelib.run_keyword('get_parallel_value_for_key',
                                                 [key], {})
          return _PabotLib.get_parallel_value_for_key(self, key)
docs: Get the value for a key. If there is no value for the key then empty
          string is returned.