+ IoImplPtr set_name(const std::string& name);
+ IoImplPtr set_size(sg_size_t size);
+ IoImplPtr set_type(s4u::Io::OpType type);
+ IoImplPtr set_storage(resource::StorageImpl* storage);
+
+ sg_size_t get_performed_ioops() { return performed_ioops_; }