public GroupsController( IClientGroupsRepository clientGroupsRepository, IClientUsersRepository clientUsersRepository) { if (clientGroupsRepository == null) { throw new ArgumentNullException(nameof(clientGroupsRepository)); } if (clientUsersRepository == null) { throw new ArgumentNullException(nameof(clientUsersRepository)); } this.clientGroupsRepository = clientGroupsRepository; this.clientUsersRepository = clientUsersRepository; }