Code snippet that can be used to override hook_ENTITY_TYPE_presave in Drupal 8.
hook_ENTITY_TYPE_presave: Act on a specific type of entity before it is created or updated.
<?php
/**
* @param \Drupal\Core\Entity\EntityInterface $user
*/
function mymodule_user_presave(Drupal\Core\Entity\EntityInterface $user) {
$user->status->value = 0;
}
chnage status of user to Blocked.
