def to_xml(options = {})
raise "Not all elements respond to to_xml" unless all? { |e| e.respond_to? :to_xml }
options[:root] ||= all? { |e| e.is_a?(first.class) && first.class.to_s != "Hash" } ? first.class.to_s.underscore.pluralize : "records"
options[:children] ||= options[:root].singularize
options[:indent] ||= 2
options[:builder] ||= Builder::XmlMarkup.new(:indent => options[:indent])
root = options.delete(:root)
children = options.delete(:children)
options[:builder].instruct! unless options.delete(:skip_instruct)
options[:builder].tag!(root.to_s.dasherize) { each { |e| e.to_xml(options.merge({ :skip_instruct => true, :root => children })) } }
end