int[] getFreeIndexes() {
		int[] freeIndexes = new int[freeIndexStack.size()];
		for (int i = 0; i < freeIndexes.length; i++) {
			freeIndexes[i] = freeIndexStack.get(i).intValue();
		}
		return freeIndexes;
	}
Returns the current list of free indexes for this index provider.
@return free index list
Ghidra/Framework/DB/src/main/java/db/buffers/IndexProvider.java