/// <summary>
/// Determines whether the type is registered
/// </summary>
/// <typeparam name="TEntity">The type of the entity.</typeparam>
/// <param name="coll">The collection to check.</param>
/// <param name="type">The type to lookup.</param>
/// <returns>
/// <c>true</c> if this type is allowed; otherwise, <c>false</c>.
/// </returns>
public static bool IsRegistered <TEntity>(this IEntityCollection <TEntity> coll, System.Type type)
where TEntity : IEntity
{
if (coll == null)
{
throw new ArgumentNullException("coll");
}
if (type == null)
{
throw new ArgumentNullException("type");
}
if (!typeof(IEntity).IsAssignableFrom(type))
{
throw new ArgumentException(string.Format("Type {0} is not assignable from {1}", type.FullName, typeof(IEntity).FullName));
}
return(coll.Any(x => x.GetType() == type));
}