explicit Io(sg_storage_t storage, sg_size_t size, OpType type);
explicit Io(sg_disk_t disk, sg_size_t size, OpType type);
public:
#ifndef DOXYGEN
explicit Io(sg_storage_t storage, sg_size_t size, OpType type);
explicit Io(sg_disk_t disk, sg_size_t size, OpType type);
public:
#ifndef DOXYGEN