This is a form element for the Package Neos.Form.FusionRenderer to render multiple form elements in a row.

MultiFieldGroup.fusion

prototype(Wysiwyg.OGE.CorporateSite:FormElement.MultiFieldGroup) < prototype(Neos.Fusion:Tag) {
    tagName = 'div'
    attributes.class = 'row'
    content = afx`
        <Neos.Fusion:Loop items={ element.elements } itemName="element">
            <Neos.Fusion:Augmenter class={ element.properties.colClass ? element.properties.colClass : 'col' }>
                <Neos.Fusion:Renderer type={element.type} />
            </Neos.Fusion:Augmenter>
        </Neos.Fusion:Loop>
    `

    @process.renderCallbacks = Neos.Form.FusionRenderer:RenderCallbacks {
        formRuntime = ${formRuntime}
        formElement = ${containerElement}
    }
}