/// <summary>
 /// Initializes a new instance of the <see cref="ProductFields" /> class with SKU related fields of type <see cref="FilterPack" /> .
 /// </summary>
 /// <param name="instance">The content item of type FilterPack that is a target of the extended API.</param>
 public ProductFields(FilterPack instance)
 {
     mInstance = instance;
 }
 /// <summary>
 /// Initializes a new instance of the <see cref="FilterPackFields" /> class with the specified content item of type FilterPack.
 /// </summary>
 /// <param name="instance">The content item of type FilterPack that is a target of the extended API.</param>
 public FilterPackFields(FilterPack instance)
 {
     mInstance = instance;
 }