syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":".for_each(|search_paths|"}]}
source_snippet:             .for_each(|search_paths| search_paths.files.retain(allowed_prefixes));
context_before:             .iter_mut()
context_after:         self.tlib_path.files.retain(allowed_prefixes);