services.xml

<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
    <services>
        <service id="loaded_service_id"
                 class="stdClass">
        </service>

        <service id="parent_service_id"
                 class="stdClass">
        </service>

        <service id="child_service_id"
                 parent="parent_service_id">
            <argument>first argument</argument>
            <argument>second argument</argument>
        </service>

        <service id="service_with_method_calls_id">
            <call method="theRightMethodName">
                <argument>first argument</argument>
                <argument>second argument</argument>
            </call>
        </service>

        <service id="synthetic_service" synthetic="true">
        </service>

    </services>
</container>