library/library_checkout/wizard/checkout_books_wizard.xml

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <record id="view_tree_checkout_books" model="ir.ui.view">
        <field name="name">Checkout Books</field>
        <field name="model">library.checkout.wizard.books</field>
        <field name="arch" type="xml">
            <tree>
                <field name="name"/>
                <field name="author_ids" widget="many2many_tags"/>
                <field name="publisher_id"/>
                <field name="date_published"/>
            </tree>
        </field>
    </record>
</odoo>