pub unsafe extern "C" fn rocksdb_writebatch_delete_rangev(
    b: *mut rocksdb_writebatch_t,
    num_keys: c_int,
    start_keys_list: *const *const c_char,
    start_keys_list_sizes: *const usize,
    end_keys_list: *const *const c_char,
    end_keys_list_sizes: *const usize
)