https://api.drupal.org/api/drupal/core%21modules%21block_content%21src%21Controller%21BlockContentController.php/function/BlockContentController%3A%3AaddForm/11.x
function BlockContentController::addForm | Drupal API
functiondrupalapi
https://api.drupal.org/api/drupal/core%21modules%21block_content%21src%21Controller%21BlockContentController.php/function/BlockContentController%3A%3Acreate/8.9.x
function BlockContentController::create | Drupal API
functioncreatedrupalapi