static_file.xml

<?xml version="1.0" encoding="UTF-8"?>
<tryton>
  <data>
    <record id="nereid_static_folder_form" model="ir.ui.view">
        <field name="model">nereid.static.folder</field>
        <field name="type">form</field>
        <field name="inherit" ref="nereid.nereid_static_folder_form"/>
        <field name="arch" type="xml">
            <![CDATA[
                <data>
                    <xpath expr="/form/field[@name='description']" position="after">
                        <label name="s3_use_bucket"/>
                        <field name="s3_use_bucket"/>
                    </xpath>
                    <xpath expr="/form/notebook" position="inside">
                        <page id="s3_settings" string="S3 Settings"
                                states="{'invisible': Not(Bool(Eval('s3_use_bucket')))}">
                            <label name="s3_access_key"/>
                            <field name="s3_access_key"/>
                            <label name="s3_secret_key"/>
                            <field name="s3_secret_key"/>
                            <label name="s3_bucket_name"/>
                            <field name="s3_bucket_name"/>
                            <group id="cloudfront_information" string="Cloudfront Information" colspan="4" col="4">
                                <label name="s3_cloudfront_cname"/>
                                <field name="s3_cloudfront_cname"/>
                            </group>
                        </page>
                    </xpath>
                </data>
            ]]>
        </field>
    </record>

    <record id="nereid_static_folder_tree" model="ir.ui.view">
        <field name="model">nereid.static.folder</field>
        <field name="type">tree</field>
        <field name="inherit" ref="nereid.nereid_static_folder_tree"/>
        <field name="arch" type="xml">
            <![CDATA[
                <data>
                    <xpath expr="/tree/field[@name='name']"
                            position="after">
                        <field name="s3_use_bucket"/>
                        <field name="s3_bucket_name"/>
                        <field name="s3_cloudfront_cname"/>
                    </xpath>
                </data>
            ]]>
        </field>
    </record>

   </data>
</tryton>