pub unsafe extern "C" fn rocksdb_writebatch_putv(
    b: *mut rocksdb_writebatch_t,
    num_keys: c_int,
    keys_list: *const *const c_char,
    keys_list_sizes: *const usize,
    num_values: c_int,
    values_list: *const *const c_char,
    values_list_sizes: *const usize
)