default Address getMinAddress(AddressFactory factory) {
		int spaceId = getAddressSpaceId();
		if (spaceId == -1) {
			return null;
		}
		AddressSpace space = factory.getAddressSpace(spaceId);
		return space.getAddress(getMinAddressOffset());
	}
If the value is an address or range, the id of the address space

@return the space id, or -1 for non-address value
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/database/target/ValueShape.java