module MultiXml

def symbolize_keys(hash)
  hash.inject({}) do |result, (key, value)|
    new_key = case key
    when String
      key.to_sym
    else
      key
    end
    new_value = case value
    when Hash
      symbolize_keys(value)
    else
      value
    end
    result[new_key] = new_value
    result
  end
end