hook_filetransfer_info_alter(&$filetransfer_info) Alter the FileTransfer class registry.

The module handler. Type:

Provides helpers to operate on files and stream wrappers. Hierarchy class \Drupal\Core\File\

file_validate(FileInterface $file, $validators = array()) Checks that a file meets the criteria specified by

Defines the file schema handler. Hierarchy class \Drupal\Core\Entity\Sql\

Defines the file entity class. Plugin annotation @ContentEntityType(

Default mode for new files. See self::chmod(). File core/lib/Drupal/Core/File/FileSystem.php, line 22

public FileInterface::getFilename() Returns

public File::setPermanent() Sets the file

public File::getOwnerId() Returns the entity