internal static void SetCollectionProperty(object resource, string propertyName,
                                                   IEdmCollectionTypeReference edmPropertyType, object value, bool clearCollection)
        {
            if (value != null)
            {
                IEnumerable collection = value as IEnumerable;
                Contract.Assert(collection != null,
                                "SetCollectionProperty is always passed the result of ODataFeedDeserializer or ODataCollectionDeserializer");

                Type resourceType = resource.GetType();
                Type propertyType = GetPropertyType(resource, propertyName);

                Type elementType;
                if (!propertyType.IsCollection(out elementType))
                {
                    string message = Error.Format(SRResources.PropertyIsNotCollection, propertyType.FullName, propertyName, resourceType.FullName);
                    throw new SerializationException(message);
                }

                IEnumerable newCollection;
                if (CanSetProperty(resource, propertyName) &&
                    CollectionDeserializationHelpers.TryCreateInstance(propertyType, edmPropertyType, elementType, out newCollection))
                {
                    // settable collections
                    collection.AddToCollection(newCollection, elementType, resourceType, propertyName, propertyType);
                    if (propertyType.IsArray)
                    {
                        newCollection = CollectionDeserializationHelpers.ToArray(newCollection, elementType);
                    }

                    SetProperty(resource, propertyName, newCollection);
                }
                else
                {
                    // get-only collections.
                    newCollection = GetProperty(resource, propertyName) as IEnumerable;
                    if (newCollection == null)
                    {
                        string message = Error.Format(SRResources.CannotAddToNullCollection, propertyName, resourceType.FullName);
                        throw new SerializationException(message);
                    }

                    if (clearCollection)
                    {
                        newCollection.Clear(propertyName, resourceType);
                    }

                    collection.AddToCollection(newCollection, elementType, resourceType, propertyName, propertyType);
                }
            }
        }
        internal static void SetDynamicCollectionProperty(object resource, string propertyName, object value,
                                                          IEdmCollectionTypeReference edmPropertyType, IEdmStructuredType structuredType,
                                                          ODataDeserializerContext readContext)
        {
            Contract.Assert(value != null);
            Contract.Assert(readContext != null);
            Contract.Assert(readContext.Model != null);

            IEnumerable collection = value as IEnumerable;

            Contract.Assert(collection != null);

            Type        resourceType = resource.GetType();
            Type        elementType  = EdmLibHelpers.GetClrType(edmPropertyType.ElementType(), readContext.Model);
            Type        propertyType = typeof(ICollection <>).MakeGenericType(elementType);
            IEnumerable newCollection;

            if (CollectionDeserializationHelpers.TryCreateInstance(propertyType, edmPropertyType, elementType,
                                                                   out newCollection))
            {
                collection.AddToCollection(newCollection, elementType, resourceType, propertyName, propertyType);
                SetDynamicProperty(resource, propertyName, newCollection, structuredType, readContext);
            }
        }