rocksdb::ffi::rocksdb_writebatch_iterate

pub unsafe extern fn rocksdb_writebatch_iterate(batch: DBWriteBatch, state: *mut c_void, put_fn: extern fn(state: *mut c_void, k: *const u8, klen: size_t, v: *const u8, vlen: size_t), deleted_fn: extern fn(state: *mut c_void, k: *const u8, klen: size_t))