    # File lib/compass/commands/unpack_extension.rb, line 106
            def parse_arguments!(parser, arguments)
              if arguments.size == 1
                parser.options[:framework] = arguments.shift
              elsif arguments.size == 0
                raise Compass::Error, "Please specify an extension to unpack."
              else
                raise Compass::Error, "Too many arguments were specified."
              end
            end