syntax_data: {"ast_node_type":"function","tokens":[{"end":58,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn new(clause: I::Clause, span: I::Span) -> Self {
context_before: impl<I: Interner> ClauseWithSupertraitSpan<I> {
context_after:         ClauseWithSupertraitSpan { clause, supertrait_span: span }