class Selenium::DevTools::V137::PerformanceTimeline

def enable(event_types:)
  @devtools.send_cmd('PerformanceTimeline.enable',
                     eventTypes: event_types)
end

def initialize(devtools)
  @devtools = devtools
end

def on(event, &block)
  event = EVENTS[event] if event.is_a?(Symbol)
  @devtools.callbacks["PerformanceTimeline.#{event}"] << block
end