@Override
	protected void setUnique(long offset, int size, TraceMemoryState val) {
		unique.put(ULongSpan.extent(offset, size), val);
	}
Construct a piece

@param data the trace-data access shim
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/pcode/exec/trace/TraceMemoryStatePcodeExecutorStatePiece.java