<?xml version="1.0" encoding="utf-8"?>
<form>
    <fields name="attribs" addfieldpath="administrator/components/com_gsd/models/forms/fields">
        <fields name="gsd">
            <fieldset name="gsd" label="GSD">
                <field name="snippet" type="fastedit"
                    label="GSD_CONTENT_TYPE" 
                    hiddenLabel="true"
                />
            </fieldset>
        </fields>
    </fields>
</form>