public FormState::isRebuilding() Determines

Holds temporary data accessible during the current page request only. All $form_state properties that are not reserved keys (see other properties

An associative array of form value keys to be removed by cleanValues(). Any values that are temporary but must still be displayed as values

Stores information about the state of a form. Hierarchy class \Drupal\Core\Form\

The complete form structure. #process, #after_build, #element_validate, and other handlers being invoked on a form element may use this reference

public FormState::getFormObject() Returns

public FormState::isValidationComplete() Determines

public FormState::cleanValues() Removes

The array of values as they were submitted by the user. These are raw and unvalidated, so should not be used without a thorough understanding

public FormState::setValidateHandlers(array $validate_handlers)