public function getContent()
    {
        if ($this->file instanceof \Doctrine\MongoDB\GridFSFile) {
            return $this->file->getMongoGridFSFile()->getBytes();
        }
        return null;
    }
public function getContent()
    {
        if ($this->file instanceof \Doctrine\MongoDB\GridFSFile) {
            return $this->file->getMongoGridFSFile()->getBytes();
        }
        return null;
    }
public function getContent ( ) { if ( $ this -> file instanceof \ Doctrine \ MongoDB \ GridFSFile ) { return $ this -> file -> getMongoGridFSFile ( ) -> getBytes ( ) ; } return null ; }
Returns the binary data of a file

@see \Core\Entity\FileInterface::getContent()
@return null|string
Returns the binary data of a file