    # File lib/rbot/config.rb, line 32
        def initialize(key, params)
          @manager = Config.manager
          # Keys must be in the form 'module.name'.
          # They will be internally passed around as symbols,
          # but we accept them both in string and symbol form.
          unless key.to_s =~ /^.+\..+$/
            raise ArgumentError,"key must be of the form 'module.name'"
          end
          @order = @@order
          @@order += 1
          @key = key.to_sym
          if @manager.overrides.key?(@key)
            @default = @manager.overrides[@key]
          elsif params.has_key? :default
            @default = params[:default]
          else
            @default = false
          end
          @desc = params[:desc]
          @type = params[:type] || String
          @on_change = params[:on_change]
          @validate = params[:validate]
          @wizard = params[:wizard]
          @requires_restart = params[:requires_restart]
          @requires_rescan = params[:requires_rescan]
          @auth_path = "config::key::#{key.sub('.','::')}"
        end