app/messages/app_show_message.rb
require 'messages/base_message'
module VCAP::CloudController
class AppShowMessage < BaseMessage
register_allowed_keys [:include]
validates_with NoAdditionalParamsValidator
validates_with IncludeParamValidator, valid_values: ['space', 'org', 'space.organization']
def self.from_params(params)
super(params, %w[include])
end
end
end