@Override
			public int compare(FunctionSymbol f1, FunctionSymbol f2) {
				return f1.getAddress().compareTo(f2.getAddress());
			}
Get all non-stub functions for computing signature overview
@return set of all non-stub function symbols
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/gui/BSimSearchPlugin.java