{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"MixedUnit::HighByte(b)"}]}
            MixedUnit::HighByte(b) => buf.push(b),
            MixedUnit::Char(c) => buf.extend(c.encode_utf8(&mut [0; 4]).as_bytes()),
        };