class RuboCop::Cop::Performance::Sample

def on_send(node)
  sample_candidate?(node) do |shuffle, shuffle_arg, method, method_args|
    return unless offensive?(method, method_args)
    range = source_range(shuffle, node)
    message = message(shuffle_arg, method, method_args, range)
    add_offense(node, location: range, message: message)
  end
end