syntax_data: {"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// Parses a single `-C linker-features` well-known feature, not a set of flags.
context_before: impl LinkerFeatures {
context_after:     pub fn from_str(s: &str) -> Option<LinkerFeatures> {