@Override
	public Address getPreviousPropertyAddress(Address addr) {
		try {
			long index = propertyMgr.getPreviousPropertyIndex(addrMap.getKey(addr));
			return addrMap.decodeAddress(index);
		}
		catch (NoSuchIndexException e) {
		}
		return null;
	}
Return the property description.

@return the property description
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/util/DefaultPropertyMap.java