syntax_data: {"ast_node_type":"function","tokens":[{"end":99,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn thinlto_codegen_set_cache_dir(cg: thinlto_code_gen_t, cache_dir: *const ::libc::c_char);
context_before:     // Setting this activates caching.
context_after:     /// Set the cache pruning interval, in seconds.