public T getContaining(long snap, Address address) {
		try (LockHold hold = LockHold.lock(readLock())) {
			M m = getForSpace(address.getAddressSpace(), false);
			if (m == null) {
				return nullOrUndefined(snap, address);
			}
			return m.getContaining(snap, address);
		}
	}
@see TraceBaseCodeUnitsView#getContaining(long, Address)
@param snap the snap
@param address the address
@return the unit or null
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/database/listing/AbstractBaseDBTraceCodeUnitsMemoryView.java