private void flushIndex() {
		try {
			writeIndex();
		}
		catch (IOException e) {
			Msg.error(this, "Failed to flush index file", e);
		}
	}
Writes current folder index.
Same as writeIndex with any IOException getting logged
@see #writeIndex()
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/local/IndexedLocalFileSystem.java