syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"profile_use:"}]}
source_snippet:     profile_use: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
context_before:         "compile the program with profiling instrumentation"),
context_after:         "use the given `.profdata` file for profile-guided optimization"),