{"ast_node_type":"function","tokens":[{"end":81,"kind":"keyword","start":0,"text":"fn"}]}
    fn vector_splat(&mut self, num_elts: usize, elt: Self::Value) -> Self::Value;
    fn extract_element(&mut self, vec: Self::Value, idx: Self::Value) -> Self::Value;
    fn extract_value(&mut self, agg_val: Self::Value, idx: u64) -> Self::Value;