<?xml version="1.0"?>
<search string="Roles Search">
                    <field name="name" string="Role"/>
                    <field name="user_ids"/>
                    <filter string="My Roles" name="my_role_ids" domain="[('user_ids', '=', uid)]"/>
                    <group expand="0" string="Group By">
                        <filter string="Users" name="filter_user_ids" domain="[]" context="{'group_by': 'user_ids'}"/>
                    </group>
                </search>
            