class Selenium::WebDriver::Interactions::InputDevice

def add_action(action)
  raise TypeError, "#{action.inspect} is not a valid action" unless action.class < Interaction
  @actions << action
end

def clear_actions
  @actions.clear
end

def create_pause(duration = 0)
  add_action(Pause.new(self, duration))
end

def encode
  {type: type, id: name, actions: @actions.map(&:encode)} unless @actions.empty?
end

def initialize(name = nil)
  @name = name || SecureRandom.uuid
  @actions = []
end