/// <summary>
/// Gets list items for property that implemented as <see cref="IPropertyContainer"/> list.
/// Example:
/// <code>
/// - Source: IPropertyContainer
/// - ListProperty: IPropertyContainer
/// - ListItem: IPropertyContainer
/// - ListItem: IPropertyContainer
/// </code>
/// </summary>
/// <param name="propertyContainer">Source property container.</param>
/// <param name="listProperty">List property.</param>
/// <returns>ListItem enumeration.</returns>
public static IEnumerable <IPropertyContainer> GetListItems(
this IPropertyContainer propertyContainer,
IProperty <IPropertyContainer> listProperty)
{
IPropertyContainer list = propertyContainer.GetValue(listProperty) ?? PropertyContainer.Empty;
return(list
.Select(pv => pv.ValueUntyped as IPropertyContainer)
.Where(container => container != null) !);
}