{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"self.indices.get_index_of(&placeholder).unwrap().into()"}]}
        self.indices.get_index_of(&placeholder).unwrap().into()
    pub(crate) fn lookup_index(&self, placeholder: ty::PlaceholderRegion) -> PlaceholderIndex {
    }