class RuboCop::Cop::Performance::IoReadlines

def on_send(node)
  readlines_on_class?(node) do |enumerable_call, readlines_call|
    offense(node, enumerable_call, readlines_call)
  end
  readlines_on_instance?(node) do |enumerable_call, readlines_call, _|
    offense(node, enumerable_call, readlines_call)
  end
end