code: func (m *DefaultUAAManager) ListUsers() (*Users, error) {
  	users := &Users{}
  	lo.G.Debug("Getting users from Cloud Foundry")
  	userList, err := m.Client.ListAllUsers("", "", "userName,id,externalId,emails,origin", "")
  	if err != nil {
  		return nil, err
  	}
  
  	lo.G.Debugf("Found %d users in the CF instance", len(userList))
  	for _, user := range userList {
  		lo.G.Debugf("Adding to users userID [%s], externalID [%s], origin [%s], email [%s], GUID [%s]", user.Username, user.ExternalID, user.Origin, Email(user), user.ID)
  		users.Add(User{
  			Username:   user.Username,
  			ExternalID: user.ExternalID,
  			Email:      Email(user),
  			Origin:     user.Origin,
  			GUID:       user.ID,
  		})
  	}
  	return users, nil
  }
docs: //ListUsers - returns uaa.Users