@Override
	public Address midX(Address x1, Address x2) {
		return x1.add(Long.divideUnsigned(x2.subtract(x1), 2));
	}
Get the trace-address-snap space for a given address space

<p>
Because this synchronizes on a cache of spaces, it should only be called by space
constructors, never by entry constructors.

@param space the address space
@return the trace-address-snap space
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/model/TraceAddressSnapSpace.java