syntax_data: {"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if no_alias && !is_return {
context_before:             // (see <https://github.com/rust-lang/unsafe-code-guidelines/issues/385#issuecomment-1368055745>).
context_after:                 attrs.set(ArgAttribute::NoAlias);