pub unsafe extern "C" fn rocksdb_create_column_families(
    db: *mut rocksdb_t,
    column_family_options: *const rocksdb_options_t,
    num_column_families: c_int,
    column_family_names: *const *const c_char,
    lencfs: *mut usize,
    errptr: *mut *mut c_char
) -> *mut *mut rocksdb_column_family_handle_t