@Override
	public AddressRangeIterator getDefaultRegisterValueAddressRanges(Register register,
			Address start, Address end) {
		RegisterValueStore store = defaultRegisterValueMap.get(register.getBaseRegister());
		if (store == null) {
			return new AddressSet().getAddressRanges();
		}
		return store.getAddressRangeIterator(start, end);
	}
Constructs a new ProgramContextDB object
@param dbHandle the handle to the database.
@param errHandler the error handler
@param language the processor language
@param addrMap the address map.
@param lock the program synchronization lock
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/register/OldProgramContextDB.java