public long getID() {
		if (func instanceof FunctionDB) {
			return func.getSymbol().getID();
		}
		return func.getProgram().getSymbolTable().getDynamicSymbolID(entryPoint);
	}
Get the id with the associated function symbol, if it exists.
Otherwise return a dynamic id based on the entry point.
@return the symbol id, or possibly a dynamic id
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/HighFunction.java