protected function buildPrefix()
    {

        if ($this->currentLevel === false) {
            return "";
        } else {
            $prefix = $this->currentLevel;
            $this->currentLevel = false;

            return $prefix . ".";
        }
    }
protected function buildPrefix()
    {

        if ($this->currentLevel === false) {
            return "";
        } else {
            $prefix = $this->currentLevel;
            $this->currentLevel = false;

            return $prefix . ".";
        }
    }
protected function buildPrefix ( ) { if ( $ this -> currentLevel === false ) { return "" ; } else { $ prefix = $ this -> currentLevel ; $ this -> currentLevel = false ; return $ prefix . "." ; } }
Creates a prefix
@return string
Creates a prefix