public static VerticalTabs::processVerticalTabs(&$element, FormStateInterface

public static FormElement::processAutocomplete(&$element, FormStateInterface

Provides a form element for entering a password, with hidden text. Usage example:

Provides a form element for selecting a language. This does not render an actual form element, but always returns the value of the default language

public static Element::isVisibleElement($element) Determines

Do not convert the submitted value from the user-supplied path. File core/lib/Drupal/Core/Render/Element/PathElement

public static Element::children(array &$elements, $sort = FALSE)

public static RenderElement::preRenderGroup($element)

public static ElementInterface::setAttributes(&$element

public static StatusMessages::renderMessages($type)