<?xml version="1.0" encoding="UTF-8"?>
<a:service xmlns:a="http://www.leaf-framework.org/application" trace="true">
    <a:init-procedure>
        <a:model-query defaultwhereclause="parameter_id=${/parameter/@parameter_id}" model="sys.sys_parameters"/>
    </a:init-procedure>
    <a:service-output output="/parameter"/>
</a:service>