module RuboCop::Cop::Lint::UnusedArgument

def after_leaving_scope(scope, _variable_table)
  scope.variables.each_value { |variable| check_argument(variable) }
end

def check_argument(variable)
  return if variable.should_be_unused?
  return if variable.referenced?
  message = message(variable)
  add_offense(variable.declaration_node.loc.name, message: message) do |corrector|
    autocorrect(corrector, variable.declaration_node)
  end
end