private void updateExistenceState() throws IOException {
		folderExists = fileSystem.folderExists(getPathname());
		versionedFolderExists =
			versionedFileSystem.isOnline() && versionedFileSystem.folderExists(getPathname());
	}
Update the values for whether this pathname exists in the private and
shared file systems.
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/GhidraFolderData.java