public ProjectionEntry(AggregateRootType aggregateRootType, ProjectionType projectionType, IProjectionManager projectionManager)
: this(aggregateRootType, projectionType, projectionManager.GetType())
{
Contract.Requires(aggregateRootType != null);
Contract.Requires(projectionType != null);
Contract.Requires(projectionManager != null);
ProjectionManager = projectionManager;
}