public function chown(int $user): vfsStreamContent
    {
        $this->user                  = $user;
        $this->lastAttributeModified = time();
        return $this;
    }
public function chown(int $user): vfsStreamContent
    {
        $this->user                  = $user;
        $this->lastAttributeModified = time();
        return $this;
    }
public function chown ( int $ user ) : vfsStreamContent { $ this -> user = $ user ; $ this -> lastAttributeModified = time ( ) ; return $ this ; }
change owner of file to given user

@param   int  $user
@return  vfsStreamContent
change owner of file to given user