public static StatusMessages::generatePlaceholder(array $element)

public static Radios::processRadios(&$element, FormStateInterface $form_state

Provides a link render element for a "more" link, like those used in blocks. Properties: #title:

Provides a render element for a group of form elements. Usage example:

Provides a form element for double-input of passwords. Formats as a pair of password fields, which do not validate unless the two entered passwords

Provides a form element for choosing a color. Properties: #default_value: Default value

public static Tel::preRenderTel($element) Prepares

public static Checkboxes::valueCallback(&$element, $input, FormStateInterface

public static RenderElement::setAttributes(&$element, $class

Stores token data in a hidden form field. This is generally used to protect against cross-site forgeries. A token element is automatically added