text: //
  // Copyright 2020 Google LLC
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //      http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  //
  
  #ifndef THIRD_PARTY_CLOUD_SPANNER_EMULATOR_BACKEND_SCHEMA_UPDATER_BACKFILL_BACKFILL_H_
  #define THIRD_PARTY_CLOUD_SPANNER_EMULATOR_BACKEND_SCHEMA_UPDATER_BACKFILL_BACKFILL_H_
  
  #include "backend/schema/catalog/index.h"
  #include "backend/schema/updater/schema_validation_context.h"
  #include "absl/status/status.h"
  
  namespace google {
  namespace spanner {
  namespace emulator {
  namespace backend {
  
  // Handles backfilling of a newly created Index.
  absl::Status BackfillIndex(const Index* index,
                             const SchemaValidationContext* context);
  
  }  // namespace backend
  }  // namespace emulator
  }  // namespace spanner
  }  // namespace google
  
  #endif  // THIRD_PARTY_CLOUD_SPANNER_EMULATOR_BACKEND_SCHEMA_BACKFILL_INDEX_BACKFILL_H_
  