syntax_data: {"ast_node_type":"import","tokens":[{"end":80,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // For now, just use the first `VarianceDiagInfo::Invariant` that we see
context_before:     pub fn xform(self, other: VarianceDiagInfo<I>) -> VarianceDiagInfo<I> {
context_after:         match self {