add_credentials_file

# File railties/lib/rails/generators/rails/credentials/credentials_generator.rb, line 10
      def add_credentials_file
        unless credentials.content_path.exist?
          template = credentials_template

          say "Adding #{credentials.content_path} to store encrypted credentials."
          say ""
          say "The following content has been encrypted with the Rails master key:"
          say ""
          say template, :on_green
          say ""

          add_credentials_file_silently(template)

          say "You can edit encrypted credentials with `rails credentials:edit`."
          say ""
        end
      end