Problem/Motivation
Deprecate drupal_process_states() as part of #2999721: [META] Deprecate the legacy include files .
Proposed resolution
Add a new public static method \Drupal\Core\Form\FormHelper::processStates().
Remaining tasks
None.
User interface changes
None.
API changes
- New method
::processStates()in class\Drupal\Core\Form\FormHelper. drupal_process_states()is deprecated.
Data model changes
None.