$this->serviceClass->registerFunction(
'lat_save_checkout',
array('session' => 'xsd:string','module_name' => 'xsd:string', 'record_id' => 'xsd:string','parent_id' => 'xsd:string','sub_module_name' => 'xsd:string','name_value_list' => 'xsd:string'),
array('return' => 'xsd:string')
);