protected function getChanges(): Changes
    {
        if (null === $this->changes) {
            $this->changes = new Changes();
        }

        return $this->changes;
    }
protected function getChanges(): Changes
    {
        if (null === $this->changes) {
            $this->changes = new Changes();
        }

        return $this->changes;
    }
protected function getChanges ( ) : Changes { if ( null === $ this -> changes ) { $ this -> changes = new Changes ( ) ; } return $ this -> changes ; }
Get FS-changes object.
Get FS - changes object .