@Override
	public int getItemCount() throws IOException {
		checkDisposed();
		if (readOnly) {
			refreshReadOnlyIndex();
		}
		return getItemCount(rootFolder);
	}
Deallocate item storage
@param folderPath
@param itemName
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/local/IndexedLocalFileSystem.java