def update(options = {})
      synchronize do
        options.each do |name, val|
          if @configuration.respond_to?("#{name}=")
            @configuration.public_send("#{name}=", val)
          end
        end
      end
    end
def update(options = {})
      synchronize do
        options.each do |name, val|
          if @configuration.respond_to?("#{name}=")
            @configuration.public_send("#{name}=", val)
          end
        end
      end
    end
Update configuration options for this bar

 @param [Hash[Symbol]] options
   the configuration options to update

 @api public