class RuboCop::Cop::Style::ClassMethods

def check_defs(name, node)
  # check if the class/module name matches the definee for the defs node
  return unless name == node.receiver
  message = format(MSG, method: node.method_name, class: name.source)
  add_offense(node.receiver.loc.name, message: message) do |corrector|
    corrector.replace(node.receiver, 'self')
  end
end