{"ast_node_type":"function","tokens":[{"end":63,"kind":"keyword","start":0,"text":"fn"}]}
    fn is_unsigned(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
        self.is_u8(cx) || self.is_u16(cx) || self.is_u32(cx) || self.is_u64(cx) || self.is_u128(cx)