# File lib_wpm/wpm.rb, line 2193
    def set_property(name, attr_map, value)
      case (name)
      when 'src'
        @src = get_property(attr_map, value, 'string', 'accessor', 'eval')
      when 'alt'
        @alt = get_property(attr_map, value, 'string', 'accessor', 'eval')
      else
        raise PropertyError, "unknown property: #{name.inspect}: at #{widget_id.inspect}"
      end

      nil
    end