如何在Odoo ListView中显示图标？

from odoo import models, fields

class MyModel(models.Model):
    _name = 'my.model'
    
    name = fields.Char(string='Name')
    icon = fields.Char(string='Icon', help='Icon path for ListView')

<record id="view_my_model_tree" model="ir.ui.view">
    <field name="name">my.model.tree</field>
    <field name="model">my.model</field>
    <field name="arch" type="xml">
        <tree>
            <field name="name"/>
            <field name="icon" widget="image" options="{'no_store': True}"/>
        </tree>
    </field>
</record>

{
    'name': 'My Module',
    'version': '1.0',
    'summary': 'Module summary',
    'depends': ['base'],
    'data': [
        'views/views.xml',
    ],
    'installable': True,
    'application': True,
}