```ruby
require "pathname"

require "vagrant-managed-servers/plugin"

module VagrantPlugins
  module ManagedServers
    lib_path = Pathname.new(File.expand_path("../vagrant-managed-servers", __FILE__))
    autoload :Action, lib_path.join("action")
    autoload :Errors, lib_path.join("errors")

    # This returns the path to the source of this plugin.
    #
    # @return [Pathname]
    def self.source_root
      @source_root ||= Pathname.new(File.expand_path("../../", __FILE__))
    end
  end
end
```

Add a require statement so that the vagrant-winrm-syncedfolders plugin is loaded
user
```ruby
require "pathname"

require "vagrant-managed-servers/plugin"
require "vagrant-winrm-syncedfolders/plugin"

module VagrantPlugins
  module ManagedServers
    lib_path = Pathname.new(File.expand_path("../vagrant-managed-servers", __FILE__))
    autoload :Action, lib_path.join("action")
    autoload :Errors, lib_path.join("errors")

    # This returns the path to the source of this plugin.
    #
    # @return [Pathname]
    def self.source_root
      @source_root ||= Pathname.new(File.expand_path("../../", __FILE__))
    end
  end
end
```
assistant