{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"read_leb128!(read_usize,"}]}
    read_leb128!(read_usize, usize, read_usize_leb128);
impl<'a> Decoder for MemDecoder<'a> {
    read_leb128!(read_u128, u128, read_u128_leb128);