public String getHTMLDisplayString() {
		if (htmlDisplayString == null) {
			htmlDisplayString = "<html><pre>" + getPreview(true) + "</pre></html>";
		}
		return htmlDisplayString;
	}
Get the preview as HTML for the code unit at or containing the address associated with this cell's row.

@return the preview string.
Ghidra/Features/Base/src/main/java/ghidra/util/table/PreviewTableCellData.java