{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"if"}]}
        if alias.def_id == key.def_id.to_def_id() && alias.args == key.args {
    if let ty::Alias(ty::Opaque, alias) = ty.ty.kind() {
            // Nothing was actually constrained, this is an opaque usage that was