syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"SolverRelating::new(self,"}]}
source_snippet:             SolverRelating::new(self, StructurallyRelateAliases::No, variance, param_env, span);
context_before:         let mut relate =
context_after:         relate.relate(lhs, rhs)?;