pub unsafe extern "C" fn rocksdb_writebatch_wi_get_from_batch(
wbwi: *mut rocksdb_writebatch_wi_t,
options: *const rocksdb_options_t,
key: *const c_char,
keylen: usize,
vallen: *mut usize,
errptr: *mut *mut c_char
) -> *mut c_char