Getting UCI diagram information

Hi guys:

I am trying to getting the following classes conected to a class named Product_DTO_OUT, but cannot find the correct way to do so. Here is an image:

In the report I get the class Product_DTP_OUT name omfClass and use the method getOwnedAttributes() as follows omfClass.getOwnedAttributes() but cannot get these classes into an array, can anyone help me? thanks

Ignacio