private void handleDirectDataReferencePreview(Set<String> set, Address address, Data data) {

		Object value = data.getValue();
		if (value instanceof Scalar) {
			Scalar scalar = (Scalar) value;
			if (scalar.getSignedValue() == 0) {
				return;
			}
		}

		String dataRepresentation = getDataValueRepresentation(address, data);
		if (!StringUtils.isBlank(dataRepresentation)) {
			set.add("= " + dataRepresentation);
		}
	}
Returns the number of comments that can be added before reaching the maximum number of
comments
@return the number of comments
Ghidra/Features/Base/src/main/java/ghidra/app/util/EolComments.java