class Quickbooks::Service::Class

def delete(classs)
  classs.active = false
  update(classs, :sparse => false)
end

def model
  Quickbooks::Model::Class
end

def update(entity, options = {})
  raise Quickbooks::InvalidModelException.new('Class sparse update is not supported by Intuit at this time') if options[:sparse] && options[:sparse] == true
  super(entity, options)
end