CassError insert_into_collections(CassSession* session, const char* key, const char* items[]) {

  CassError rc = CASS_OK;

  CassStatement* statement = NULL;

  CassFuture* future = NULL;

  CassCollection* collection = NULL;

  const char** item = NULL;

  const char* query = "INSERT INTO examples.collections (key, items) VALUES (?, ?);";

  statement = cass_statement_new(query, 2);

  cass_statement_bind_string(statement, 0, key);

  collection = cass_collection_new(CASS_COLLECTION_TYPE_SET, 2);

  for (item = items; *item; item++) {

    cass_collection_append_string(collection, *item);

  }

  cass_statement_bind_collection(statement, 1, collection);

  cass_collection_free(collection);

  future = cass_session_execute(session, statement);

  cass_future_wait(future);

  rc = cass_future_error_code(future);

  if (rc != CASS_OK) {

    print_error(future);

  }

  cass_future_free(future);

  cass_statement_free(statement);

  return rc;

}