研究 demo，有很多疑问

Question 1: How is the gateway called without seeing the infrastructure? Question 2: Is the executor module of the web-app just for object conversion? If it is for object conversion, can it be replaced directly with mapstruct? Question 3: Is the client module a dependency module of the web-adapter and the web-app? Then the call relationship diagram in the README.md is wrong. Question 4: There is no implementation in the domain, and the dependency module of the web-app and the infrastructure. Then the call relationship diagram in the README.md is wrong again. Question 5: There is only one application startup class in the demo. Where is the rpc call? There is no rpc call. How can it be implemented in the huge Alibaba?