AccountForm::buildEntity

public AccountForm::buildEntity(array $form, FormStateInterface $form_state)

public function buildEntity(array $form, FormStateInterface $form_state) {
  // Change the roles array to a list of enabled roles.
  // @todo: Alter the form state as the form values are directly extracted and
  //   set on the field, which throws an exception as the list requires
  //   numeric keys. Allow to override this per field. As this function is
  //   called twice, we have to prevent it from getting the array keys twice.

  if (is_string(key($form_state->getValue('roles')))) {
    $form_state->setValue('roles', array_keys(array_filter($form_state->getValue('roles'))));
  }

  /** @var \Drupal\user\UserInterface $account */
  $account = parent::buildEntity($form, $form_state);

  // Translate the empty value '' of language selects to an unset field.
  foreach (array('preferred_langcode', 'preferred_admin_langcode') as $field_name) {
    if ($form_state->getValue($field_name) === '') {
      $account->$field_name = NULL;
    }
  }

  // Set existing password if set in the form state.
  $current_pass = trim($form_state->getValue('current_pass'));
  if (strlen($current_pass) > 0) {
    $account->setExistingPassword($current_pass);
  }

  // Skip the protected user field constraint if the user came from the
  // password recovery page.
  $account->_skipProtectedUserFieldConstraint = $form_state->get('user_pass_reset');

  return $account;
}