class RuboCop::Config

def deprecation_check
  all_cops = self['AllCops']
  return unless all_cops
  %w(Exclude Include).each do |key|
    plural = "#{key}s"
    next unless all_cops[plural]
    all_cops[key] = all_cops[plural] # Stay backwards compatible.
    all_cops.delete(plural)
    yield "AllCops/#{plural} was renamed to AllCops/#{key}"
  end
end