Why in Ordering.API CreateOrderComand contain all basket information via HTTP request?

[m1nh101]

Hi, I'm new to microservice. In my head for create order flow:

1. When CreateOrderCommand created, server take request and identity who's requested
2. Send a request to get user's basket to Basket.API by HTTPClient or Grpc
3. Check if basket is empty or not before continue process

But look like in code flow, CreateOrderCommand contain all information about basket that is created from payload of HTTP request. Can anyone help me explain why?