{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":".lower_generic_params_mut(&generics.params,"}]}
            .lower_generic_params_mut(&generics.params, hir::GenericParamSource::Generics)
        let mut params: SmallVec<[hir::GenericParam<'hir>; 4]> = self
            .collect();