public int getNumberOfStages(int queries_per_stage) {
		if ((functions == null)||(functions.size() == 0))
			return 1;
		if (queries_per_stage == 0)
			queries_per_stage = DEFAULT_QUERIES_PER_STAGE;
		return (functions.size() + (queries_per_stage-1)) / queries_per_stage;
	}
@return the program from which all queried functions are from
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/facade/SFOverviewInfo.java