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: sqlite_adapter.rb
    path of file: ./repos/database_validations/lib/database_validations/lib/adapters
    
    the code of the file until where you have to start completion: module DatabaseValidations
  module Adapters
    class SqliteAdapter < BaseAdapter
      ADAPTER = :sqlite3

      class << self
        def unique_index_name(_error_
    
        def unique_index_name(_error_message); end

        def unique_error_columns(error_message)
          error_message.scan(/\w+\.([^,:]+)/).flatten
        end

        def foreign_key_error_column(error_message)
          error_message[/\("([^"]+)"\) VALUES/, 1]
        end
      end