protected TextLine buildFooterText(DataType dataType) {
		int length = dataType.getLength();
		if (length < 0) {
			return new TextLine(" <i>Unsized</i>");
		}

		if (dataType.isZeroLength()) {
			return new TextLine("0");
		}

		return new TextLine(
			Integer.toString(length) + " (" + NumericUtilities.toHexString(length) + ")");
	}
Compares this representation and the given representation creates a diff string for both
representations.

@param otherRepresentation the other representation to diff against.
@return An array of two strings: the first is this object's diff value, the second is the
        given objects diff value.
Ghidra/Features/Base/src/main/java/ghidra/app/util/html/HTMLDataTypeRepresentation.java