@Override
	public List<Function> getFunctions(Side side) {
		if (side == LEFT) {
			return getSourceFunctions();
		}
		return getTargetFunctions();
	}
Removes all functions in the model that come from the given
program

@param program the program to remove functions from
Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/model/MatchedFunctionComparisonModel.java