message: Added code to change the data type of ItemType
diff: @@ -20,7 +20,7 @@ namespace AutoRest.Ruby.Azure.Model
  public string ItemName { get; private set; }
  - public CompositeType ItemType
  + public IModelType ItemType
  {
  get
  {
  @@ -31,7 +31,7 @@ namespace AutoRest.Ruby.Azure.Model
  Property property = Properties.FirstOrDefault(p => p.ModelType is SequenceType);
  if (property != null)
  {
  - return ((SequenceType)property.ModelType).ElementType as CompositeType;
  + return ((SequenceType)property.ModelType).ElementType;
  }
  else
  {
  