{"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"(tcx.generics_of(def_id),"}]}
            (tcx.generics_of(def_id), generics.span)
        hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn { generics, .. }, .. }) => {
        }