Re: how to Retrieve document structure of a part. how to Display the name of the document associated with the part as output.

Try below methods

PartDocHelper.service.getAssociatedDocuments(part)

                    WTPartHelper.service.getDescribedByWTDocuments(part)

                    WTPartHelper.service.getReferencesWTDocumentMasters(part)

Regards,

Kaushik