syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // span for both obligations that it is lowered to.
context_before:             // `Self::Assoc1: Trait<OtherAssoc = Self::Assoc2>` gets the same
context_after:             if let Some(impl_item_span) = ty_to_impl_span(proj.self_ty()) {