@Specialization
@SlowPath
protected Object dump(RFunction function, byte igvDump, byte verbose) {
controlVisibility();
RootNode root = function.getTarget().getRootNode();
if (igvDump == RRuntime.LOGICAL_FALSE) {
// Use .dot dump instead
writeDotTreeToFile(root, verbose == RRuntime.LOGICAL_TRUE);
// User gets no feedback about the output file; should 'debug.deump' be visible?
return RNull.instance;