def respond_to?(m)
      return true if super
      at_m = ('@' + m.to_s).to_sym
      instance_variables.include?(at_m)
    end
def respond_to?(m)
      return true if super
      at_m = ('@' + m.to_s).to_sym
      instance_variables.include?(at_m)
    end
The initializer can take multiple arguments in the form of key values
 where the key is the variable name and the value is the variable
 value. This is intended for testing purposes only.
 - +args+ [Hash] instance variable symbols and their values

 *Example*

  Ox::Bag.new(:@x => 42, :@y => 57)

 Replaces the Object.respond_to?() method.
 - +m+ [Symbol] method symbol
 *return* [Boolean] true for any method that matches an instance variable
 reader, otherwise false.