Thank you for your response David.
I noticed the upon generating the BO, the framework generates associations for both TEXT_COLLECTION and CHANGE_DOCUMENT.
I tested my demo BO using BOPT to create entries for ROOT and TEXT_COLLECTION. Change document were created automatically by the framework. WOW:-)
I havent got around to reading the entries but am assuming that I will have to use READ_BY_ASSOCIATION for both nodes, TEXT_COLLECTION and CHANGE_DOCUMENT.
Please correct me if my understanding is incorrect.
Thanks!