@Override
	protected ItemStorage findItemStorage(String folderPath, String itemName)
			throws FileNotFoundException {
		try {
			Folder folder = getFolder(folderPath, GetFolderOption.READ_ONLY);
			Item item = folder.items.get(itemName);
			if (item != null) {
				return item.itemStorage;
			}
		}
		catch (NotFoundException e) {
			// ignore - handled below
		}
		throw new FileNotFoundException("Item not found: " + folderPath + SEPARATOR + itemName);
	}
Find an existing storage location
@param folderPath
@param itemName
@return storage location.  A non-null value does not guarantee that the associated 
item actually exists.
@throws FileNotFoundException
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/local/IndexedLocalFileSystem.java