action_data.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data>
        <record id="action_server_demo" model="ir.actions.server">
            <field name="name">Action Demo</field>
            <field name="model_id" ref="model_demo_actions_singleton"/>
            <field name="binding_model_id" ref="demo_actions_singleton.model_demo_actions_singleton"/>
            <field name="state">code</field>
            <field name="code">
                records.action_demo()
            </field>
        </record>

        <record id="action_other_model_demo" model="ir.actions.server">
            <field name="name">Action Other Demo</field>
            <field name="model_id" ref="model_demo_actions_singleton"/>
            <field name="binding_model_id" ref="hr_expense.model_hr_expense"/>
            <field name="state">code</field>
            <field name="code">
                raise Warning('Hello')
            </field>
        </record>
    </data>
</odoo>