<?xml version="1.0"?>
<search string="Links">
                    <field name="url" string="Title and URL" filter_domain="['|', ('title', 'ilike', self), ('url', 'ilike', self)]"/>
                    <field name="title"/>
                    <field name="label"/>
                    <field name="campaign_id"/>
                    <field name="medium_id"/>
                    <field name="source_id"/>
                    <group expand="0" string="Group By">
                        <filter string="Campaign" name="groupby_campaign_id" context="{'group_by': 'campaign_id'}"/>
                        <filter string="Medium" name="groupby_medium_id" context="{'group_by': 'medium_id'}"/>
                        <filter string="Source" name="groupby_source_id" context="{'group_by': 'source_id'}"/>
                    </group>
                </search>
            