class EacRubyUtils::Immutable::ArrayAccessor

def apply(klass)
  accessor = self
  klass.send(:define_method, name) do |value|
    accessor.immutable_value_set(self, value)
  end
  klass.send(:define_method, ::ActiveSupport::Inflector.pluralize(name)) do
    accessor.immutable_value_get(self)
  end
end

def immutable_value_get(object)
  super || []
end

def immutable_value_set(object, value)
  duplicate_object(object) do |old_value|
    (old_value || []) + [value]
  end
end