code: def acquire_value_set(self, *tags):
          
          setname = self._acquire_value_set(*tags)
          if setname is None:
              raise ValueError("Could not aquire a value set")
          return setname
docs: Reserve a set of values for this execution.
          No other process can reserve the same set of values while the set is
          reserved. Acquired value set needs to be released after use to allow
          other processes to access it.
          Add tags to limit the possible value sets that this returns.