StateTransitionValidation::getValidTransitions

public StateTransitionValidation::getValidTransitions(ContentEntityInterface $entity, AccountInterface $user)

public function getValidTransitions(ContentEntityInterface $entity, AccountInterface $user) {
  $bundle = $this->loadBundleEntity($entity->getEntityType()->getBundleEntityType(), $entity->bundle());

  /** @var \Drupal\content_moderation\Entity\ModerationState $current_state */
  $current_state = $entity->moderation_state->entity;
  $current_state_id = $current_state ? $current_state->id() : $bundle->getThirdPartySetting('content_moderation', 'default_moderation_state');

  // Determine the states that are legal on this bundle.
  $legal_bundle_states = $bundle->getThirdPartySetting('content_moderation', 'allowed_moderation_states', []);

  // Legal transitions include those that are possible from the current state,
  // filtered by those whose target is legal on this bundle and that the
  // user has access to execute.
  $transitions = array_filter($this->getTransitionsFrom($current_state_id), function(ModerationStateTransition $transition) use ($legal_bundle_states, $user) {
    return in_array($transition->getToState(), $legal_bundle_states, TRUE)
      && $user->hasPermission('use ' . $transition->id() . ' transition');
  });

  return $transitions;
}