class RuboCop::Cop::Lint::UnusedBlockArgument

def message_for_normal_block(variable, all_arguments)
  if all_arguments.none?(&:referenced?) &&
     !define_method_call?(variable)
    if all_arguments.count > 1
      "You can omit all the arguments if you don't care about them."
    else
      "You can omit the argument if you don't care about it."
    end
  else
    message_for_underscore_prefix(variable)
  end
end