def message(message, verbose_prefix = '', relative_indentation = 2)
      message = verbose_prefix + message if verbose?
      puts_indented message if verbose?

      @indentation_level += relative_indentation
      yield if block_given?
      @indentation_level -= relative_indentation
    end
def message(message, verbose_prefix = '', relative_indentation = 2)
      message = verbose_prefix + message if verbose?
      puts_indented message if verbose?

      @indentation_level += relative_indentation
      yield if block_given?
      @indentation_level -= relative_indentation
    end
Prints a verbose message taking an optional verbose prefix and
 a relative indentation valid for the UI action in the passed
 block.

 @todo Clean interface.