class RuboCop::Cop::Rails::Validation

def on_send(node)
  return if node.receiver
  return unless (last_argument = node.last_argument)
  range = node.loc.selector
  add_offense(range, message: message(node)) do |corrector|
    return if !last_argument.literal? && !last_argument.splat_type? && !frozen_array_argument?(last_argument)
    corrector.replace(range, 'validates')
    correct_validate_type(corrector, node)
  end
end