Tracks if any errors have been set on any form. Type: bool File

public FormBuilder::doBuildForm($form_id, &$element, FormStateInterface

An associative array of values submitted to the form. The validation functions and submit functions use this array for nearly all their decision

Type:

public FormBuilderInterface::getFormId($form_arg, FormStateInterface

public FormCacheInterface::getCache($form_build_id, FormStateInterface

public FormStateDecoratorBase::getBuildInfo()

Type:

Defines an exception used, when the POST HTTP body is broken. Hierarchy class \Sy

public FormStateInterface::setRebuild($rebuild = TRUE)