Hai Shi

Results 2 issues of Hai Shi

![image](https://github.com/int32bit/docker-keystone/assets/9103416/943636d5-b7a7-4e71-9678-147ad2eef836) The reason is the identity use the `CONF.identity.default_domain_id` which's value is default. But the database of keystone hasn't this value.

tree-sitter' goal is that It can build a concrete syntax tree for a source file. If code_ast's backend is tree-sitter, so the tree is cst, not ast?