module ActionCable::Channel::Callbacks::ClassMethods

def after_subscribe(*methods, &block)
  set_callback(:subscribe, :after, *methods, &block)
end

def after_unsubscribe(*methods, &block)
  set_callback(:unsubscribe, :after, *methods, &block)
end

def before_subscribe(*methods, &block)
  set_callback(:subscribe, :before, *methods, &block)
end

def before_unsubscribe(*methods, &block)
  set_callback(:unsubscribe, :before, *methods, &block)
end