Delegator#marshal_dump

# File tmp/rubies/ruby-4.1.0-preview1/lib/delegate.rb, line 204
def marshal_dump
  ivars = instance_variables.reject {|var| /\A@delegate_/ =~ var}
  [
    :__v2__,
    ivars, ivars.map {|var| instance_variable_get(var)},
    __getobj__
  ]
end