The usual answer, as always, is to add another layer of abstraction. Enterprise Java:

    @Resource("ejb/PropertySale")
    PropertySaleManager psm;

    psm.sell(property, buyer, seller, agent, contract);

This style of code is so popular in the code I've seen, that I almost think EJB3 is just conspiracy to allow procedural programming in Java, and to keep people thinking they still do OO to satisfy their egos.