ruby_celluloid_init.rb

module Celluloid
  def included(klass)
    klass.send :extend,  ClassMethods
    klass.send :include, InstanceMethods

    klass.send :extend, Internals::Properties

    klass.property :mailbox_class, default: Celluloid::Mailbox
    klass.property :proxy_class,   default: Celluloid::Proxy::Cell
    klass.property :task_class,    default: Celluloid.task_class

    # ... snip ...
  end
end