public List<? extends AbstractPngText> getTextChunks() {
        return textChunks != null ? Collections.unmodifiableList(textChunks) : null;
    }
<p>
Only used when writing PNG images.
</p>

<p>
Valid values: a list of WriteTexts.
</p>
src/main/java/org/apache/commons/imaging/formats/png/PngImagingParameters.java