/// <summary>
/// The exists.
/// </summary>
/// <param name="collection">
/// The collection.
/// </param>
/// <param name="entity">
/// The entity.
/// </param>
/// <typeparam name="T">
/// The type of the <see cref="IEntity"/>
/// </typeparam>
/// <returns>
/// The <see cref="bool"/>.
/// </returns>
public static bool Exists <T>(this IEntityCollection collection, T entity) where T : class, IEntity
{
var resolved = collection.ResolveValidatedProvider(entity);
return(resolved != null && resolved.Exists(entity));
}