# File lib/god/watch.rb, line 42
    def behavior(kind)
      # create the behavior
      begin
        b = Behavior.generate(kind, self)
      rescue NoSuchBehaviorError => e
        abort e.message
      end
      
      # send to block so config can set attributes
      yield(b) if block_given?
      
      # abort if the Behavior is invalid, the Behavior will have printed
      # out its own error messages by now
      abort unless b.valid?
      
      self.behaviors << b
    end