private void setFunction(Function function) {
		if (function != null && function.equals(currentFunction)) {
			return;
		}

		doSetFunction(function);
	}
A variable used to restrict open-ended operations, like expanding all nodes or filtering.
Ghidra/Features/DecompilerDependent/src/main/java/ghidra/app/plugin/core/decompiler/taint/TaintSliceTreeProvider.java