Sometimes one needs to depict a really infinite loops without exit. To do so:
shouldn't I be able to detach at the exit from while loop? That is, after endwhile:
http://www.plantuml.com/plantuml/uml/SoWkIImgAStDuG8pk1GK5CepCdDIDPBpyr8qCuirIefAKpL1mgbvAH2PjCISOeXGIcf9Od86bmDG2cW20000