**What** Simplify the transaction base service. **How** In fact, it does not need to be template and reduce the extensibility as the type is internally enforce. Now, the type is deduced by this which can be any derived class.
**What** Simplify the transaction base service. **How** In fact, it does not need to be template and reduce the extensibility as the type is internally enforce. Now, the type is deduced by this which can be any derived class.