Provides a trait for radios, checkboxes, and similar composite form elements. Any form element that is comprised of several distinct parts can

public Range::getInfo() Returns the element

public static VerticalTabs::preRenderVerticalTabs($element)

public Weight::getInfo() Returns the

public SystemCompactLink::getInfo()

public static Select::processSelect(&$element, FormStateInterface $form_state

Provides an interface for form element plugins. Form element plugins are a subset of render elements, specifically representing HTML elements

public static Actions::preRenderActionsDropbutton(&$element, FormStateInterface

public Item::getInfo() Returns the element

public static File::processFile(&$element, FormStateInterface $form_state,