/// <summary>
        /// Удаляет привязку.
        /// </summary>
        /// <param name="projectBinding">Привязка к проекту.</param>
        /// <param name="actionUserId">Идентификатор пользователя, кто добавил привязки.</param>
        public void RemoveProjectBinding(ProjectBinding projectBinding, string actionUserId)
        {
            if (!ProjectBindings.Contains(projectBinding))
            {
                return;
            }

            Apply(new ProjectBindingRemoved(projectBinding, CreateMetadata(userId: actionUserId)));
        }
 private void When(ProjectBindingRemoved @event)
 {
     ProjectBindings.Remove(@event.ProjectBinding);
 }
 private void When(ProjectBindingAdded @event)
 {
     ProjectBindings.Add(@event.ProjectBinding);
 }