openjdk version "21.0.11" 2026-04-21 LTS
OpenJDK Runtime Environment Corretto-21.0.11.10.1 (build 21.0.11+10-LTS)
OpenJDK 64-Bit Server VM Corretto-21.0.11.10.1 (build 21.0.11+10-LTS, mixed mode, sharing)
Traceback (most recent call last):
  File "/Users/magicliang/Desktop/Programming/git/hexo-blog/examples/software-modeling/labs/E09/check.py", line 32, in <module>
    assert edge["from"] in c4 and edge["to"] in c4, "unknown C4 containment endpoint"
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: unknown C4 containment endpoint
