Getter(s)/Setter(s) are not required to be mentioned.
However, to make the design more self explanatory, one note may enough to explain like "Getter(s)/Setter(s) are not explained in the designed and are implicit part of Entities."
SCJP, SCWCD, SCEA
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com