public void setTainted(boolean tainted) {
			contents =
				new PairedEmuFileContents<>(concrete, new ReadOnlyTaintArrayFileContents(pathname));
		}
A file whose contents have a taint piece
Ghidra/Debug/TaintAnalysis/src/main/java/ghidra/pcode/emu/taint/lib/TaintEmuUnixFileSystem.java