code: function Fe(iid, f, dis /* this */, args) {
          argIndex = 0;
          returnStack.push(undefined);
          wrappedExceptionVal = undefined;
          updateSid(f);
          if (sandbox.analysis && sandbox.analysis.functionEnter) {
              sandbox.analysis.functionEnter(iid, f, dis, args);
          }
      }
docs: Function enter