@Override
	public AddressRange getLastRange() {
		ensureKnown(maxAddress, maxAddress);
		return cache.getLastRange();
	}
{@inheritDoc}

If this method returns true, then the entire delegate has been loaded into the cache.
Ghidra/Debug/ProposedUtils/src/main/java/ghidra/program/model/address/CachedAddressSetView.java