How to handle serialized associations with minimapper that can be validated.

code.rb

class Address
  include Minimapper::Entity

  attribute :street
  attribute :postalcode
  attribute :city
  attribute :country

  validates :street, presence: true
end

class Customer
  include Minimapper::Entity

  attribute :name
  attribute :phone
  attribute :address_attributes

  def address
    @address ||= Address.new(address_attributes || {})
  end

  validates :name, presence: true

  validate :validate_address

  def validate_address
    errors.add(:address_attributes, "invalid") unless address.valid?
  end
end