ch := make(chan struct {
		err       error
		scopeName string
	}, len(scopes))
	var wg sync.WaitGroup
	for _, scope := range scopes {
		wg.Add(1)
		go func(si *ScopeInfo) {
			defer wg.Done()
			err := c.PutScope(si)
			ch <- struct {
				err       error
				scopeName string
			}{err: err, scopeName: si.Name}
		}(scope)
	}
	wg.Wait()
	close(ch)

// that relates the scope name and values.
message ScopedResourceSelectorRequirement {
  // The name of the scope that the selector applies to.
  optional string scopeName = 1;

  // Represents a scope's relationship to a set of values.
  // Valid operators are In, NotIn, Exists, DoesNotExist.
  optional string operator = 2;