# File lib/active_support/vendor/xml-simple-1.0.11/xmlsimple.rb, line 128 def initialize(defaults = nil) unless defaults.nil? || defaults.instance_of?(Hash) raise ArgumentError, "Options have to be a Hash." end @default_options = normalize_option_names(defaults, (KNOWN_OPTIONS['in'] + KNOWN_OPTIONS['out']).uniq) @options = Hash.new @_var_values = nil end