module ActiveModel::Serializers::Xml

def from_xml(xml) 

def from_xml(xml)
  self.attributes = Hash.from_xml(xml).values.first
  self
end

def to_xml(options = {}, &block)

passed through +options+.
Returns XML representing the model. Configuration can be 
def to_xml(options = {}, &block)
  Serializer.new(self, options).serialize(&block)
end