syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // private so the "true" path to `CommandExt` isn't accessible.
context_before:             // `std::os::unix` reexports the contents of `std::sys::unix::ext`. `std::sys` is
context_after:             //