pub unsafe extern "C" fn rocksdb_create_iterators(
db: *mut rocksdb_t,
opts: *mut rocksdb_readoptions_t,
column_families: *mut *mut rocksdb_column_family_handle_t,
iterators: *mut *mut rocksdb_iterator_t,
size: usize,
errptr: *mut *mut c_char,
)