pub unsafe extern "C" fn rocksdb_ingest_external_file_cf(
    db: *mut rocksdb_t,
    handle: *mut rocksdb_column_family_handle_t,
    file_list: *const *const c_char,
    list_len: usize,
    opt: *const rocksdb_ingestexternalfileoptions_t,
    errptr: *mut *mut c_char
)