You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: spanner_create_table_with_foreign_key_delete_cascade.rb
    path of file: ./repos/ruby-docs-samples/spanner
    
    the code of the file until where you have to start completion: # Copyright 2023 Google, Inc
#
# 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 "
    
def spanner_create_table_with_foreign_key_delete_cascade project_id:, instance_id:, database_id:
  db_admin_client = Google::Cloud::Spanner::Admin::Database.database_admin

  database_path = db_admin_client.database_path project: project_id,
                                                instance: instance_id,
                                                database: database_id

  job = db_admin_client.update_database_ddl database: database_path, statements: [
    %{ CREATE TABLE Customers (
        CustomerId INT64 NOT NULL,
        CustomerName STRING(62) NOT NULL,
        ) PRIMARY KEY (CustomerId)},
    %{ CREATE TABLE ShoppingCarts (
        CartId INT64 NOT NULL,
        CustomerId INT64 NOT NULL,
        CustomerName STRING(62) NOT NULL,
        CONSTRAINT FKShoppingCartsCustomerId FOREIGN KEY (CustomerId)
        REFERENCES Customers (CustomerId) ON DELETE CASCADE
    ) PRIMARY KEY (CartId)}
  ]

  puts "Waiting for operation to complete..."
  job.wait_until_done!
  puts "Created Customers and ShoppingCarts table with FKShoppingCartsCustomerId \
  foreign key constraint on database #{database_id} on instance #{instance_id}"
end