src/Media/Helper.php
public static final function generateThumbnailsFrom($files, array $size)
    {
        foreach($files as $file) {
            self::generateThumbnail($file->getRecord(), $size);
        }
    }
public static final function generateThumbnailsFrom($files, array $size)
    {
        foreach($files as $file) {
            self::generateThumbnail($file->getRecord(), $size);
        }
    }
Generates a thumbnails of the files associated with the record

@param \Vegas\Media\File\Decorator[] $files
@param array $size