@Override
		public long read(long offset, TaintVec buf, long fileSize) {
			buf.setEmpties();
			return buf.length;
		}
A taint-contents for a file whose contents are not tainted
Ghidra/Debug/TaintAnalysis/src/main/java/ghidra/pcode/emu/taint/lib/TaintEmuUnixFileSystem.java