Objects are deleted with the method delete of UnitOfWork.
Example code in native Java://UOW besorgen
IUnitOfWork uow=self.getUnitOfWork();
// Delete first object of selection
// Keep in mind that the mechatronic objects are only deleted
// if isPlaceholderPlaced() returns true
MechatronicObject mo= (MechatronicObject) selectedEOs.get(0);
if (mo.isPlaceholderPlaced())
uow.delete(mo);//UOW besorgen
uow=self.getUnitOfWork();
// Delete first object of selection
// Keep in mind that the mechatronic objects are only deleted
// if isPlaceholderPlaced() returns true
mo = selectedEOs.get(0);
if (mo.isPlaceholderPlaced())
uow.delete(mo);