saxulum / saxulum-elasticsearch-querybuilder

        $structuredLines = [];

        foreach ($lines as $i => $line) {

            $lastStructuredLine = $structuredLines[count($structuredLines) - 1] ?? '';

            $this->structuredLine($line, $lastStructuredLine, $position, $structuredLines);

        }

        $structuredLines[count($structuredLines) - 1] .= ';';

        $structuredLines = [];

        foreach ($lines as $i => $line) {

            $lastLine = $lines[$i-1] ?? '';

            $this->structuredLine($line, $lastLine, $position, $structuredLines);

        }

        return implode("\n", $structuredLines);

    }