autoloaded?

# File activesupport/lib/active_support/dependencies.rb, line 291
  def autoloaded?(desc)
    # No name => anonymous module.
    return false if desc.is_a?(Module) && desc.name.blank?
    name = to_constant_name desc
    return false unless qualified_const_defined? name
    return autoloaded_constants.include?(name)
  end