{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"crate::variance::Variance::Invariant"}]}
            crate::variance::Variance::Invariant => chalk_ir::Variance::Invariant,
            crate::variance::Variance::Covariant => chalk_ir::Variance::Covariant,
            crate::variance::Variance::Contravariant => chalk_ir::Variance::Contravariant,