public static extern void writebatch_append(leveldb_writebatch_t *destination, leveldb_writebatch_t *source);
public static extern void write(leveldb_t *db, leveldb_writeoptions_t *options, leveldb_writebatch_t *batch, out IntPtr errptr);
public static extern void writebatch_iterate(leveldb_writebatch_t *p0, void *state, leveldb_writebatch_iterate_put put, leveldb_writebatch_iterate_deleted deleted);
public static extern void writebatch_delete(leveldb_writebatch_t *p0, void *key, size_t klen);
public static extern void writebatch_put(leveldb_writebatch_t *p0, void *key, size_t klen, void *val, size_t vlen);
public static extern void writebatch_clear(leveldb_writebatch_t *p0);
public static extern void writebatch_destroy(leveldb_writebatch_t *p0);