# File lib/innodb/data_dictionary.rb, line 303
  def each_data_dictionary_index
    unless block_given?
      return enum_for(:each_data_dictionary_index)
    end

    data_dictionary_indexes.each do |table_name, indexes|
      indexes.each do |index_name, root_page_number|
        yield table_name, index_name,
          data_dictionary_index(table_name, index_name)
      end
    end

    nil
  end