Get list of all roles in Netsuite using java ( using either direct approach or saved searches) -

i want list of roles in netsuite.

i using wsdl2java generate client port , service netsuite wsdl.

i can assign access role employee in netsuite using ui. can view existing role employee on ui.

i can search employees using saved searches how can roles using saved searches.

same question asked @ : get list of roles in netsuite answer given specific php.

how can achieve same using wsdl2java classes ?