/// <summary>
/// Initializes a new instance of the <see cref="PackageContainer{TItem}" /> class.
/// </summary>
/// <param name="assemblyResolver">A custom <see cref="IResolveAssembly"/>. If null, uses the default <see cref="NuPlug.AssemblyResolver"/>.</param>
public PackageContainer(IResolveAssembly assemblyResolver = null)
{
AssemblyResolver = assemblyResolver ?? new AssemblyResolver();
Batch.AddPart(this);
_container = new CompositionContainer(_catalog);
}