pub fn extract_safety_doc(doc: &str) -> Option<String>Expand description
Extract the # Safety or ## Safety section from a Rust doc comment string.
The doc parameter should be the concatenation of all #[doc = "..."] attribute
values joined by newlines, as returned by attr.doc_str().
Returns the text of the Safety section (with leading/trailing whitespace trimmed),
or None if no Safety section is present.