public function getFileId(): \Psr\Http\Message\UriInterface
    {
        if (!$this->fileId) {
            return new Uri();
        }

        return $this->fileId;
    }
public function getFileId(): \Psr\Http\Message\UriInterface
    {
        if (!$this->fileId) {
            return new Uri();
        }

        return $this->fileId;
    }
public function getFileId ( ) : \ Psr \ Http \ Message \ UriInterface { if ( ! $ this -> fileId ) { return new Uri ( ) ; } return $ this -> fileId ; }
Returns the id of the MediaFile object this object is associated with.

@return \Psr\Http\Message\UriInterface
Returns the id of the MediaFile object this object is associated with .