class ActiveModel::Serializer

def embed(type, options={})
  CONFIG.embed = type
  if EMBED_IN_ROOT_OPTIONS.any? { |opt| options[opt].present? }
    CONFIG.embed_in_root = true
  end
  if options[:embed_in_root_key].present?
    CONFIG.embed_in_root_key = options[:embed_in_root_key]
  end
  ActiveSupport::Deprecation.warn <<-WARN
ice: embed is deprecated. **
e of .embed method on a Serializer will be soon removed, as this should have a global scope and not a class scope.
 use the global .setup method instead:
Model::Serializer.setup do |config|
ig.embed = :#{type}
ig.embed_in_root = #{CONFIG.embed_in_root || false}
  WARN
end